The number 25825
25825 is a composite number with 6 divisors. Its prime factorisation is Ć 1033. Divisors (6): 1, 5, 25, 1033, 5165, 25825.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25825 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25825 is composite. Its prime factorisation is
- 3
The divisors add up to 32054; without 25825 itself that is 6229, so 25825 is deficient (6229 is less than 25825). Euler's totient Ļ(25825) = 20640 numbers up to 25825 share no factor with it.
- 4
The digits of 25825 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 77 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25825 = 5^{2} \times 1033 \]25825 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 32054 |
| Euler totient Ļ(n) | 20640 |
| Square | 666930625 |
| Cube | 17223483390625 |
| Square root | 160.701587 (= 5ā1033) |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 77 |
| Scientific notation | 2.5825 Ć |
25825 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand eight hundred and twenty-five |
| Binary (base 2) | 110010011100001 |
| Octal (base 8) | 62341 |
| Hexadecimal (base 16) | 64E1 |
| Base 3 | 1022102111 |
| As time | 25825 seconds = 7 h 10 min 25 s |
Is 25825 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 (25825 Ć· 5 = 5165) | 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 2) | 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 4) | 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 8) | 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 25825 a prime number?
No. 25825 = Ć 1033, so it is divisible by 5.
What are the factors of 25825?
1, 5, 25, 1033, 5165, 25825.
What is 25825 in binary?
110010011100001 (hexadecimal 64E1, octal 62341).
What is the square root of 25825?
About 160.7016, exactly 5ā1033.
Is 25825 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 25825?
It is a composite number with 6 divisors.