The number 25225
25225 is a composite number with 6 divisors. Its prime factorisation is Ć 1009. Divisors (6): 1, 5, 25, 1009, 5045, 25225.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25225 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25225 is composite. Its prime factorisation is
- 3
The divisors add up to 31310; without 25225 itself that is 6085, so 25225 is deficient (6085 is less than 25225). Euler's totient Ļ(25225) = 20160 numbers up to 25225 share no factor with it.
- 4
The digits of 25225 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 108 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25225 = 5^{2} \times 1009 \]25225 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 31310 |
| Euler totient Ļ(n) | 20160 |
| Square | 636300625 |
| Cube | 16050683265625 |
| Square root | 158.823802 (= 5ā1009) |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 108 |
| Scientific notation | 2.5225 Ć |
25225 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand two hundred and twenty-five |
| Binary (base 2) | 110001010001001 |
| Octal (base 8) | 61211 |
| Hexadecimal (base 16) | 6289 |
| Base 3 | 1021121021 |
| As time | 25225 seconds = 7 h 0 min 25 s |
Is 25225 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (25225 Ć· 5 = 5045) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25225 a prime number?
No. 25225 = Ć 1009, so it is divisible by 5.
What are the factors of 25225?
1, 5, 25, 1009, 5045, 25225.
What is 25225 in binary?
110001010001001 (hexadecimal 6289, octal 61211).
What is the square root of 25225?
About 158.8238, exactly 5ā1009.
Is 25225 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 25225?
It is a composite number with 6 divisors.