30156925 has 6 divisors (see below), whose sum is σ = 37394618. Its totient is φ = 24125520.

The previous prime is 30156911. The next prime is 30156937. The reversal of 30156925 is 52965103.

It can be written as a sum of positive squares in 3 ways, for example, as 93636 + 30063289 = 306^2 + 5483^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30156925 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 603114 + ... + 603163.

Almost surely, 2^30156925 is an apocalyptic number.

It is an amenable number.

30156925 is a deficient number, since it is larger than the sum of its proper divisors (7237693).

30156925 is a wasteful number, since it uses less digits than its factorization.

30156925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206287 (or 1206282 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 30156925 is about 5491.5321177245. The cubic root of 30156925 is about 311.2640891887.

The spelling of 30156925 in words is "thirty million, one hundred fifty-six thousand, nine hundred twenty-five".