325 (number)
| ||||
|---|---|---|---|---|
| Cardinal | three hundred twenty-five | |||
| Ordinal | 325th (three hundred twenty-fifth) | |||
| Factorization | 52× 13 | |||
| Divisors | 1, 5, 13, 25, 65, 325 | |||
| Greek numeral | ΤΚΕ´ | |||
| Roman numeral | CCCXXV | |||
| Binary | 1010001012 | |||
| Ternary | 1100013 | |||
| Quaternary | 110114 | |||
| Quinary | 23005 | |||
| Senary | 13016 | |||
| Octal | 5058 | |||
| Duodecimal | 23112 | |||
| Hexadecimal | 14516 | |||
| Vigesimal | G520 | |||
| Base 36 | 9136 | |||
325 is the natural number after 324 and before 326.
In mathematics
325 is a polygonal number, meaning it is a triangular number, a hexagonal number, and a nonagonal. It is also a centered polygonal number, meaning it is also a centered nonagonal number. 325 is the smallest and only known 3-hyperperfect number, a part of the Moser-de Bruijn sequence, and the smallest odd unprimeable number.
References
- 1 2 Vanovschi, Vitalii. "Properties of the number 325". www.numberempire.com. Archived from the original on 2021-08-24. Retrieved 2026-09-09.
- ↑ Sloane, N. J. A. (ed.). "Sequence A034897 (Hyperperfect numbers: x such that x = 1 + k*(sigma(x)-x-1) for some k > 0)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ Sloane, N. J. A. (ed.). "Sequence A007594 (Smallest n-hyperperfect number: m such that m=n(sigma(m)-m-1)+1; or 0 if no such number exists)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ Sloane, N. J. A. (ed.). "Sequence A000695 (Moser-de Bruijn sequence)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
