The number 25023
25023 is a composite number with 8 divisors. Its prime factorisation is 3 × 19 × 439. Divisors (8): 1, 3, 19, 57, 439, 1317, 8341, 25023.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25023 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25023 is composite. Its prime factorisation is
- 3
The divisors add up to 35200; without 25023 itself that is 10177, so 25023 is deficient (10177 is less than 25023). Euler's totient φ(25023) = 15768 numbers up to 25023 share no factor with it.
- 4
The digits of 25023 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 87 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25023 = 3 \times 19 \times 439 \]
25023 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 35200 |
| Euler totient φ(n) | 15768 |
| Square | 626150529 |
| Cube | 15668164687167 |
| Square root | 158.186599 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 87 |
| Scientific notation | 2.5023 × |
25023 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand and twenty-three |
| Binary (base 2) | 110000110111111 |
| Octal (base 8) | 60677 |
| Hexadecimal (base 16) | 61BF |
| Base 3 | 1021022210 |
| As time | 25023 seconds = 6 h 57 min 3 s |
Is 25023 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 | Yes (25023 ÷ 3 = 8341) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25023 a prime number?
No. 25023 = 3 × 19 × 439, so it is divisible by 3.
What are the factors of 25023?
1, 3, 19, 57, 439, 1317, 8341, 25023.
What is 25023 in binary?
110000110111111 (hexadecimal 61BF, octal 60677).
What is the square root of 25023?
About 158.1866.
Is 25023 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 25023?
It is a composite number with 8 divisors.