The number 25029
25029 is a composite number with 12 divisors. Its prime factorisation is × 103. Divisors (12): 1, 3, 9, 27, 81, 103, 243, 309, 927, 2781, 8343, 25029.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
25029 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25029 is composite. Its prime factorisation is
- 3
The divisors add up to 37856; without 25029 itself that is 12827, so 25029 is deficient (12827 is less than 25029). Euler's totient φ(25029) = 16524 numbers up to 25029 share no factor with it.
- 4
The digits of 25029 add up to 18, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 126 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25029 = 3^{5} \times 103 \]25029 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 37856 |
| Euler totient φ(n) | 16524 |
| Square | 626450841 |
| Cube | 15679438099389 |
| Square root | 158.205562 (= 9√309) |
| Digit sum / digital root | 18 / 9 |
| Collatz steps to 1 | 126 |
| Scientific notation | 2.5029 × |
25029 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand and twenty-nine |
| Binary (base 2) | 110000111000101 |
| Octal (base 8) | 60705 |
| Hexadecimal (base 16) | 61C5 |
| Base 3 | 1021100000 |
| As time | 25029 seconds = 6 h 57 min 9 s |
Is 25029 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 (25029 ÷ 3 = 8343) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 | Yes (25029 ÷ 9 = 2781) | 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 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25029 a prime number?
No. 25029 = × 103, so it is divisible by 3.
What are the factors of 25029?
1, 3, 9, 27, 81, 103, 243, 309, 927, 2781, 8343, 25029.
What is 25029 in binary?
110000111000101 (hexadecimal 61C5, octal 60705).
What is the square root of 25029?
About 158.2056, exactly 9√309.
Is 25029 divisible by 3?
Yes. Its digits add up to 18, a multiple of 3.
What is special about the number 25029?
It is a composite number with 12 divisors.