The number 25441
25441 is a composite number with 8 divisors. Its prime factorisation is 13 × 19 × 103. Divisors (8): 1, 13, 19, 103, 247, 1339, 1957, 25441.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25441 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25441 is composite. Its prime factorisation is
- 3
The divisors add up to 29120; without 25441 itself that is 3679, so 25441 is deficient (3679 is less than 25441). Euler's totient φ(25441) = 22032 numbers up to 25441 share no factor with it.
- 4
The digits of 25441 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 56 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25441 = 13 \times 19 \times 103 \]
25441 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 29120 |
| Euler totient φ(n) | 22032 |
| Square | 647244481 |
| Cube | 16466546841121 |
| Square root | 159.502351 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 56 |
| Scientific notation | 2.5441 × |
25441 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand four hundred and forty-one |
| Binary (base 2) | 110001101100001 |
| Octal (base 8) | 61541 |
| Hexadecimal (base 16) | 6361 |
| Base 3 | 1021220021 |
| As time | 25441 seconds = 7 h 4 min 1 s |
Is 25441 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 3) | 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 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | 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 25441 a prime number?
No. 25441 = 13 × 19 × 103, so it is divisible by 13.
What are the factors of 25441?
1, 13, 19, 103, 247, 1339, 1957, 25441.
What is 25441 in binary?
110001101100001 (hexadecimal 6361, octal 61541).
What is the square root of 25441?
About 159.5024.
Is 25441 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 25441?
It is a composite number with 8 divisors.