The number 6725
6725 is a composite number with 6 divisors. Its prime factorisation is Ć 269. Divisors (6): 1, 5, 25, 269, 1345, 6725.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
6725 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
6725 is composite. Its prime factorisation is
- 3
The divisors add up to 8370; without 6725 itself that is 1645, so 6725 is deficient (1645 is less than 6725). Euler's totient Ļ(6725) = 5360 numbers up to 6725 share no factor with it.
- 4
The digits of 6725 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 44 steps to reach 1.
LaTeX source of the formulas on this page
\[ 6725 = 5^{2} \times 269 \]6725 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 8370 |
| Euler totient Ļ(n) | 5360 |
| Square | 45225625 |
| Cube | 304142328125 |
| Square root | 82.006097 (= 5ā269) |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 44 |
| Scientific notation | 6.725 Ć |
6725 in other forms
| Form | Value |
|---|---|
| In words | six thousand seven hundred and twenty-five |
| Binary (base 2) | 1101001000101 |
| Octal (base 8) | 15105 |
| Hexadecimal (base 16) | 1A45 |
| Base 3 | 100020002 |
| As time | 6725 seconds = 1 h 52 min 5 s |
Is 6725 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 (6725 Ć· 5 = 1345) | 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 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 4) | 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 6725 a prime number?
No. 6725 = Ć 269, so it is divisible by 5.
What are the factors of 6725?
1, 5, 25, 269, 1345, 6725.
What is 6725 in binary?
1101001000101 (hexadecimal 1A45, octal 15105).
What is the square root of 6725?
About 82.0061, exactly 5ā269.
Is 6725 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 6725?
It is a composite number with 6 divisors.