The number 25201
25201 is a composite number with 8 divisors. Its prime factorisation is 11 × 29 × 79. Divisors (8): 1, 11, 29, 79, 319, 869, 2291, 25201.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25201 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25201 is composite. Its prime factorisation is
- 3
The divisors add up to 28800; without 25201 itself that is 3599, so 25201 is deficient (3599 is less than 25201). Euler's totient φ(25201) = 21840 numbers up to 25201 share no factor with it.
- 4
The digits of 25201 add up to 10, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 64 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25201 = 11 \times 29 \times 79 \]
25201 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 28800 |
| Euler totient φ(n) | 21840 |
| Square | 635090401 |
| Cube | 16004913195601 |
| Square root | 158.748228 |
| Digit sum / digital root | 10 / 1 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.5201 × |
25201 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand two hundred and one |
| Binary (base 2) | 110001001110001 |
| Octal (base 8) | 61161 |
| Hexadecimal (base 16) | 6271 |
| Base 3 | 1021120101 |
| As time | 25201 seconds = 7 h 0 min 1 s |
Is 25201 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 | No (remainder 1) | 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 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (25201 ÷ 11 = 2291) | 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 25201 a prime number?
No. 25201 = 11 × 29 × 79, so it is divisible by 11.
What are the factors of 25201?
1, 11, 29, 79, 319, 869, 2291, 25201.
What is 25201 in binary?
110001001110001 (hexadecimal 6271, octal 61161).
What is the square root of 25201?
About 158.7482.
Is 25201 divisible by 3?
No. Its digits add up to 10, which is not a multiple of 3.
What is special about the number 25201?
It is a composite number with 8 divisors.