8631925 has 12 divisors (see below), whose sum is σ = 10765060. Its totient is φ = 6865920.

The previous prime is 8631911. The next prime is 8631943. The reversal of 8631925 is 5291368.

It can be written as a sum of positive squares in 6 ways, for example, as 81 + 8631844 = 9^2 + 2938^2 .

It is not a de Polignac number, because 8631925 - 2⁵ = 8631893 is a prime.

It is an Ulam number.

8631925 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3931 + ... + 5719.

Almost surely, 2^8631925 is an apocalyptic number.

It is an amenable number.

8631925 is a deficient number, since it is larger than the sum of its proper divisors (2133135).

8631925 is a wasteful number, since it uses less digits than its factorization.

8631925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992 (or 1987 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 8631925 is about 2938.0137848553. The cubic root of 8631925 is about 205.1331674915.

The spelling of 8631925 in words is "eight million, six hundred thirty-one thousand, nine hundred twenty-five".