The number 25422
25422 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 19 × 223. Divisors (16): 1, 2, 3, 6, 19, 38, 57, 114, 223, 446, 669, 1338, 4237, 8474, 12711, 25422.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25422 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25422 is composite. Its prime factorisation is
- 3
The divisors add up to 53760; without 25422 itself that is 28338, so 25422 is abundant (28338 is more than 25422). Euler's totient φ(25422) = 7992 numbers up to 25422 share no factor with it.
- 4
The digits of 25422 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 56 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25422 = 2 \times 3 \times 19 \times 223 \]
25422 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 53760 |
| Euler totient φ(n) | 7992 |
| Square | 646278084 |
| Cube | 16429681451448 |
| Square root | 159.442780 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 56 |
| Scientific notation | 2.5422 × |
25422 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand four hundred and twenty-two |
| Binary (base 2) | 110001101001110 |
| Octal (base 8) | 61516 |
| Hexadecimal (base 16) | 634E |
| Base 3 | 1021212120 |
| As time | 25422 seconds = 7 h 3 min 42 s |
Is 25422 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (25422 ÷ 2 = 12711) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (25422 ÷ 3 = 8474) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (25422 ÷ 6 = 4237) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25422 a prime number?
No. 25422 = 2 × 3 × 19 × 223, so it is divisible by 2.
What are the factors of 25422?
1, 2, 3, 6, 19, 38, 57, 114, 223, 446, 669, 1338, 4237, 8474, 12711, 25422.
What is 25422 in binary?
110001101001110 (hexadecimal 634E, octal 61516).
What is the square root of 25422?
About 159.4428.
Is 25422 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 25422?
It is a composite number with 16 divisors.