31422925 has 6 divisors (see below), whose sum is σ = 38964458. Its totient is φ = 25138320.

The previous prime is 31422901. The next prime is 31422959. The reversal of 31422925 is 52922413.

It can be written as a sum of positive squares in 3 ways, for example, as 386884 + 31036041 = 622^2 + 5571^2 .

It is not a de Polignac number, because 31422925 - 2⁵ = 31422893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31422893 and 31422902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628434 + ... + 628483.

Almost surely, 2^31422925 is an apocalyptic number.

It is an amenable number.

31422925 is a deficient number, since it is larger than the sum of its proper divisors (7541533).

31422925 is a wasteful number, since it uses less digits than its factorization.

31422925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256927 (or 1256922 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 31422925 is about 5605.6154880619. The cubic root of 31422925 is about 315.5601856912.

The spelling of 31422925 in words is "thirty-one million, four hundred twenty-two thousand, nine hundred twenty-five".