The folowing table expresses '225' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|
| 2 | 11100001 | 100 | 1 | |||||
| 3 | 22100 | 12,10 | 1 | |||||
| 4 | 3201 | 12 | 3 | |||||
| 5 | 1400 | 10 | 1 | |||||
| 6 | 1013 | 5 | ||||||
| 7 | 441 | 12 | 3 | |||||
| 8 | 341 | 10 | 1 | |||||
| 9 | 270 | 10 | 1 | |||||
| 10 | 225 | 9 | ||||||
| 11 | 195 | 14 | 5 | |||||
| 12 | 169 | 14 | 5 | |||||
| 13 | 144 | 9 | ||||||
| 14 | 121 | 4 | ||||||
| 15 | 100 | 1 | ||||||
| 16 | E1 | F |
Factors: 32 * 52
225 is in the Pythagorean Triple: (225, 272, 353).