636225 has 24 divisors (see below), whose sum is σ = 1116000. Its totient is φ = 318720.

The previous prime is 636217. The next prime is 636241. The reversal of 636225 is 522636.

It is not a de Polignac number, because 636225 - 2³ = 636217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 636195 and 636204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1026 + ... + 1524.

It is an arithmetic number, because the mean of its divisors is an integer number (46500).

2⁶³⁶²²⁵ is an apocalyptic number.

It is an amenable number.

636225 is a deficient number, since it is larger than the sum of its proper divisors (479775).

636225 is a wasteful number, since it uses less digits than its factorization.

636225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 524 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 636225 is about 797.6371355447. The cubic root of 636225 is about 86.0076160553.

It can be divided in two parts, 636 and 225, that added together give a triangular number (861 = T₄₁).

The spelling of 636225 in words is "six hundred thirty-six thousand, two hundred twenty-five".