The number 25067
25067 is a composite number with 4 divisors. Its prime factorisation is 7 × 3581. Divisors (4): 1, 7, 3581, 25067.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 25067: a semiprime: 7 × 3581, the product of two primes.
- 2
25067 is composite. Its prime factorisation is
- 3
The divisors add up to 28656; without 25067 itself that is 3589, so 25067 is deficient (3589 is less than 25067). Euler's totient φ(25067) = 21480 numbers up to 25067 share no factor with it.
- 4
The digits of 25067 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 139 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25067 = 7 \times 3581 \]
25067 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 28656 |
| Euler totient φ(n) | 21480 |
| Square | 628354489 |
| Cube | 15750961975763 |
| Square root | 158.325614 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 139 |
| Scientific notation | 2.5067 × |
25067 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand and sixty-seven |
| Binary (base 2) | 110000111101011 |
| Octal (base 8) | 60753 |
| Hexadecimal (base 16) | 61EB |
| Base 3 | 1021101102 |
| As time | 25067 seconds = 6 h 57 min 47 s |
Is 25067 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 3) | 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 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (25067 ÷ 7 = 3581) | 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 3) | 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 7) | 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 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25067 a prime number?
No. 25067 = 7 × 3581, so it is divisible by 7.
What are the factors of 25067?
1, 7, 3581, 25067.
What is 25067 in binary?
110000111101011 (hexadecimal 61EB, octal 60753).
What is the square root of 25067?
About 158.3256.
Is 25067 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 25067?
25067 is a semiprime: 7 × 3581, the product of two primes.