base 25 is a positional numeral system with twenty-five as its base. It uses 25 different digits for representing numbers. The digits for base 25 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, g, h, i, j, k, l, m, n, and o.
duodecimal (base 12)
The duodecimal system (also known as base 12 or dozenal) is a positional notation numeral system using twelve as its base.