30992925 has 24 divisors (see below), whose sum is σ = 52496640. Its totient is φ = 16124800.

The previous prime is 30992917. The next prime is 30992959. The reversal of 30992925 is 52929903.

It is not a de Polignac number, because 30992925 - 2³ = 30992917 is a prime.

It is a super-2 number, since 2×30992925² = 1921122800111250, which contains 22 as substring.

It is a congruent number.

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, 1965 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (2187360).

Almost surely, 2^30992925 is an apocalyptic number.

It is an amenable number.

30992925 is a deficient number, since it is larger than the sum of its proper divisors (21503715).

30992925 is a wasteful number, since it uses less digits than its factorization.

30992925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133 (or 10128 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 30992925 is about 5567.1289728189. The cubic root of 30992925 is about 314.1141652831.

The spelling of 30992925 in words is "thirty million, nine hundred ninety-two thousand, nine hundred twenty-five".