31872625 has 16 divisors (see below), whose sum is σ = 40165632. Its totient is φ = 25249200.

The previous prime is 31872623. The next prime is 31872677. The reversal of 31872625 is 52627813.

It is a happy number.

It is not a de Polignac number, because 31872625 - 2¹ = 31872623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31872623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12184 + ... + 14566.

It is an arithmetic number, because the mean of its divisors is an integer number (2510352).

Almost surely, 2^31872625 is an apocalyptic number.

It is an amenable number.

31872625 is a deficient number, since it is larger than the sum of its proper divisors (8293007).

31872625 is a wasteful number, since it uses less digits than its factorization.

31872625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505 (or 2495 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 31872625 is about 5645.5845578647. The cubic root of 31872625 is about 317.0584102247.

The spelling of 31872625 in words is "thirty-one million, eight hundred seventy-two thousand, six hundred twenty-five".