The number 25250
25250 is a composite number with 16 divisors. Its prime factorisation is 2 × × 101. Divisors (16): 1, 2, 5, 10, 25, 50, 101, 125, 202, 250, 505, 1010, 2525, 5050, 12625, 25250.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25250 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25250 is composite. Its prime factorisation is
- 3
The divisors add up to 47736; without 25250 itself that is 22486, so 25250 is deficient (22486 is less than 25250). Euler's totient φ(25250) = 10000 numbers up to 25250 share no factor with it.
- 4
The digits of 25250 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 95 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25250 = 2 \times 5^{3} \times 101 \]25250 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 47736 |
| Euler totient φ(n) | 10000 |
| Square | 637562500 |
| Cube | 16098453125000 |
| Square root | 158.902486 (= 5√1010) |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 95 |
| Scientific notation | 2.525 × |
25250 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand two hundred and fifty |
| Binary (base 2) | 110001010100010 |
| Octal (base 8) | 61242 |
| Hexadecimal (base 16) | 62A2 |
| Base 3 | 1021122012 |
| As time | 25250 seconds = 7 h 0 min 50 s |
Is 25250 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (25250 ÷ 2 = 12625) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (25250 ÷ 5 = 5050) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (25250 ÷ 10 = 2525) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25250 a prime number?
No. 25250 = 2 × × 101, so it is divisible by 2.
What are the factors of 25250?
1, 2, 5, 10, 25, 50, 101, 125, 202, 250, 505, 1010, 2525, 5050, 12625, 25250.
What is 25250 in binary?
110001010100010 (hexadecimal 62A2, octal 61242).
What is the square root of 25250?
About 158.9025, exactly 5√1010.
Is 25250 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 25250?
It is a composite number with 16 divisors.