The number 5725
5725 is a composite number with 6 divisors. Its prime factorisation is Ć 229. Divisors (6): 1, 5, 25, 229, 1145, 5725.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 5725: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
5725 is composite. Its prime factorisation is
- 3
The divisors add up to 7130; without 5725 itself that is 1405, so 5725 is deficient (1405 is less than 5725). Euler's totient Ļ(5725) = 4560 numbers up to 5725 share no factor with it.
- 4
The digits of 5725 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 28 steps to reach 1.
LaTeX source of the formulas on this page
\[ 5725 = 5^{2} \times 229 \]5725 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 7130 |
| Euler totient Ļ(n) | 4560 |
| Square | 32775625 |
| Cube | 187640453125 |
| Square root | 75.663730 (= 5ā229) |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 28 |
| Scientific notation | 5.725 Ć |
5725 in other forms
| Form | Value |
|---|---|
| In words | five thousand seven hundred and twenty-five |
| Binary (base 2) | 1011001011101 |
| Octal (base 8) | 13135 |
| Hexadecimal (base 16) | 165D |
| Base 3 | 21212001 |
| As time | 5725 seconds = 1 h 35 min 25 s |
Is 5725 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 1) | 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 (5725 Ć· 5 = 1145) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 1) | 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 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 5725 a prime number?
No. 5725 = Ć 229, so it is divisible by 5.
What are the factors of 5725?
1, 5, 25, 229, 1145, 5725.
What is 5725 in binary?
1011001011101 (hexadecimal 165D, octal 13135).
What is the square root of 5725?
About 75.6637, exactly 5ā229.
Is 5725 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 5725?
5725 is a happy number: repeatedly adding the squares of its digits reaches 1.