The number 25949
25949 is a composite number with 8 divisors. Its prime factorisation is 7 × 11 × 337. Divisors (8): 1, 7, 11, 77, 337, 2359, 3707, 25949.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25949 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25949 is composite. Its prime factorisation is
- 3
The divisors add up to 32448; without 25949 itself that is 6499, so 25949 is deficient (6499 is less than 25949). Euler's totient φ(25949) = 20160 numbers up to 25949 share no factor with it.
- 4
The digits of 25949 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 51 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25949 = 7 \times 11 \times 337 \]
25949 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 32448 |
| Euler totient φ(n) | 20160 |
| Square | 673350601 |
| Cube | 17472774745349 |
| Square root | 161.086933 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 51 |
| Scientific notation | 2.5949 × |
25949 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand nine hundred and forty-nine |
| Binary (base 2) | 110010101011101 |
| Octal (base 8) | 62535 |
| Hexadecimal (base 16) | 655D |
| Base 3 | 1022121002 |
| As time | 25949 seconds = 7 h 12 min 29 s |
Is 25949 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 2) | 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 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (25949 ÷ 7 = 3707) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (25949 ÷ 11 = 2359) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25949 a prime number?
No. 25949 = 7 × 11 × 337, so it is divisible by 7.
What are the factors of 25949?
1, 7, 11, 77, 337, 2359, 3707, 25949.
What is 25949 in binary?
110010101011101 (hexadecimal 655D, octal 62535).
What is the square root of 25949?
About 161.0869.
Is 25949 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 25949?
It is a composite number with 8 divisors.