The number 24725
24725 is a composite number with 12 divisors. Its prime factorisation is × 23 × 43. Divisors (12): 1, 5, 23, 25, 43, 115, 215, 575, 989, 1075, 4945, 24725.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
24725 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
24725 is composite. Its prime factorisation is
- 3
The divisors add up to 32736; without 24725 itself that is 8011, so 24725 is deficient (8011 is less than 24725). Euler's totient φ(24725) = 18480 numbers up to 24725 share no factor with it.
- 4
The digits of 24725 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 64 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24725 = 5^{2} \times 23 \times 43 \]24725 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 32736 |
| Euler totient φ(n) | 18480 |
| Square | 611325625 |
| Cube | 15115026078125 |
| Square root | 157.241852 (= 5√989) |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.4725 × |
24725 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand seven hundred and twenty-five |
| Binary (base 2) | 110000010010101 |
| Octal (base 8) | 60225 |
| Hexadecimal (base 16) | 6095 |
| Base 3 | 1020220202 |
| As time | 24725 seconds = 6 h 52 min 5 s |
Is 24725 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 | Yes (24725 ÷ 5 = 4945) | 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 | No (remainder 1) | 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 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24725 a prime number?
No. 24725 = × 23 × 43, so it is divisible by 5.
What are the factors of 24725?
1, 5, 23, 25, 43, 115, 215, 575, 989, 1075, 4945, 24725.
What is 24725 in binary?
110000010010101 (hexadecimal 6095, octal 60225).
What is the square root of 24725?
About 157.2419, exactly 5√989.
Is 24725 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 24725?
It is a composite number with 12 divisors.