30663625 has 16 divisors (see below), whose sum is σ = 40285440. Its totient is φ = 23238000.

The previous prime is 30663593. The next prime is 30663629. The reversal of 30663625 is 52636603.

It is not a de Polignac number, because 30663625 - 2⁵ = 30663593 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30663629) 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, 4081 + ... + 8830.

It is an arithmetic number, because the mean of its divisors is an integer number (2517840).

Almost surely, 2^30663625 is an apocalyptic number.

It is an amenable number.

30663625 is a deficient number, since it is larger than the sum of its proper divisors (9621815).

30663625 is a wasteful number, since it uses less digits than its factorization.

30663625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12945 (or 12935 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 30663625 is about 5537.4746049079. The cubic root of 30663625 is about 312.9977135458.

The spelling of 30663625 in words is "thirty million, six hundred sixty-three thousand, six hundred twenty-five".