Names of 640625
| Nominal | 640625 |
| Cardinal | six hundred forty thousand six hundred twenty-five |
| Ordinal | 640,625th |
| This number as US currency | six hundred forty thousand six hundred twenty-five dollars |
| Is 640625 an odd number? | 640625 is an odd number |
| Is 640625 an even number? | 640625 is NOT an even number |
| Is 640625 a palindrome? | 640625 is NOT a palindrome number |
| Is 640625 a triangle number? | 640625 is NOT a triangle number |
640625 in other Bases
| Base 2 (Binary) | 100111000110011100012 |
| Base 3 (Ternary) | 10121122022123 |
| Base 4 (Quaternary) | 21301213014 |
| Base 5 (Quinary) | 1310000005 |
| Base 6 (Senary) | 214215056 |
| Base 8 (Octal) | 23431618 |
| Base 12 (Duodecimal) | 26A89512 |
| Base 16 (Hexadecimal) | 9C67116 |
| Base 20 (Vigesimal) | 401B520 |
Primes and Factors tests for 640625
| Is 640625 a Prime Number? | 640625 is NOT a prime |
| Is 640625 a perfect number? | 640625 is NOT a perfect number |
| Is 640625 a Mersenne Prime? | 640625 is NOT a Mersenne prime |
| Is 640625 a Fermat Prime? | 640625 is NOT a Fermat prime |
| Is 640625 a Fibonacci Prime? | 640625 is NOT a Fibonacci prime |
| Is 640625 a Partition Prime? | 640625 is NOT a Partition prime |
| Is 640625 a Pell Prime? | 640625 is NOT a Pell prime |
| Prime Factors | Prime factors of 640625 |
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640625 in other Numerals
| 640625 in Roman Numeral | DCXLDCXXV |
| 640625 in Chinese Numeral | 陸拾萬肆萬陸佰貳拾伍 |
| 640625 in Egyptian Numeral | 𓆐𓆐𓆐𓆐𓆐𓆐𓂰𓍧𓎇𓏾 |
| 640625 in Babylonian Numeral |    |
Roots and stuff for 640625
| Is 640625 a square number? | 640625 is NOT a square number |
| Is 640625 a cube number? | 640625 is NOT a cube number |
| Square root of the number 640625 | 800.39052967911 |
| Cube root of the number 640625 | 86.205431009568 |
Recreational math for 640625
| Number 640625 reversed | 526046 |
| Sum of the digits | 23 |
| No of digits | 6 |