Names of 2005
| Nominal | 2005 |
| Cardinal | two thousand five |
| Ordinal | 2,005th |
| This number as US currency | two thousand five dollars |
| Is 2005 an odd number? | 2005 is an odd number |
| Is 2005 an even number? | 2005 is NOT an even number |
| Is 2005 a palindrome? | 2005 is NOT a palindrome number |
| Is 2005 a triangle number? | 2005 is NOT a triangle number |
2005 in other Bases
| Base 2 (Binary) | 111110101012 |
| Base 3 (Ternary) | 22020213 |
| Base 4 (Quaternary) | 1331114 |
| Base 5 (Quinary) | 310105 |
| Base 6 (Senary) | 131416 |
| Base 8 (Octal) | 37258 |
| Base 12 (Duodecimal) | 11B112 |
| Base 16 (Hexadecimal) | 7D516 |
| Base 20 (Vigesimal) | 50520 |
Primes and Factors tests for 2005
| Is 2005 a Prime Number? | 2005 is NOT a prime |
| Is 2005 a perfect number? | 2005 is NOT a perfect number |
| Is 2005 a Mersenne Prime? | 2005 is NOT a Mersenne prime |
| Is 2005 a Fermat Prime? | 2005 is NOT a Fermat prime |
| Is 2005 a Fibonacci Prime? | 2005 is NOT a Fibonacci prime |
| Is 2005 a Partition Prime? | 2005 is NOT a Partition prime |
| Is 2005 a Pell Prime? | 2005 is NOT a Pell prime |
| Prime Factors | Prime factors of 2005 |
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2005 in other Numerals
| 2005 in Roman Numeral | MMV |
| 2005 in Chinese Numeral | 貳仟伍 |
| 2005 in Egyptian Numeral | 𓆽𓏾 |
| 2005 in Babylonian Numeral |   |
Roots and stuff for 2005
| Is 2005 a square number? | 2005 is NOT a square number |
| Is 2005 a cube number? | 2005 is NOT a cube number |
| Square root of the number 2005 | 44.777226354476 |
| Cube root of the number 2005 | 12.609701103711 |
Recreational math for 2005
| Number 2005 reversed | 5002 |
| Sum of the digits | 7 |
| No of digits | 4 |