The number 27725
27725 is a composite number with 6 divisors. Its prime factorisation is Ć 1109. Divisors (6): 1, 5, 25, 1109, 5545, 27725.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
27725 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
27725 is composite. Its prime factorisation is
- 3
The divisors add up to 34410; without 27725 itself that is 6685, so 27725 is deficient (6685 is less than 27725). Euler's totient Ļ(27725) = 22160 numbers up to 27725 share no factor with it.
- 4
The digits of 27725 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 152 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27725 = 5^{2} \times 1109 \]27725 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 34410 |
| Euler totient Ļ(n) | 22160 |
| Square | 768675625 |
| Cube | 21311531703125 |
| Square root | 166.508258 (= 5ā1109) |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 152 |
| Scientific notation | 2.7725 Ć |
27725 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand seven hundred and twenty-five |
| Binary (base 2) | 110110001001101 |
| Octal (base 8) | 66115 |
| Hexadecimal (base 16) | 6C4D |
| Base 3 | 1102000212 |
| As time | 27725 seconds = 7 h 42 min 5 s |
Is 27725 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 (27725 Ć· 5 = 5545) | 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 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 5) | 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 27725 a prime number?
No. 27725 = Ć 1109, so it is divisible by 5.
What are the factors of 27725?
1, 5, 25, 1109, 5545, 27725.
What is 27725 in binary?
110110001001101 (hexadecimal 6C4D, octal 66115).
What is the square root of 27725?
About 166.5083, exactly 5ā1109.
Is 27725 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 27725?
It is a composite number with 6 divisors.