Numbers / 125
The Number 125
125 is composite: factorization 5^3. That gives 125 exactly 4 divisors: 1, 5, 25, 125. 125's proper divisors total just 31, 94 short of 125, the deficient case most of 125's neighbors share too. 125 is also a perfect cube, since 5³ = 125. 125 has a digit sum of 8; for 125, the digital root works out to 8. 125: 5 all divide 125 evenly, out of 2-12. 125 is 1111101 in binary and 7D in hex; as a Roman numeral it's CXXV.