30909125 has 32 divisors (see below), whose sum is σ = 43400448. Its totient is φ = 21806400.

The previous prime is 30909119. The next prime is 30909161. The reversal of 30909125 is 52190903.

It is not a de Polignac number, because 30909125 - 2⁸ = 30908869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36962 + ... + 37788.

It is an arithmetic number, because the mean of its divisors is an integer number (1356264).

Almost surely, 2^30909125 is an apocalyptic number.

It is an amenable number.

30909125 is a deficient number, since it is larger than the sum of its proper divisors (12491323).

30909125 is a wasteful number, since it uses less digits than its factorization.

30909125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 30909125 is about 5559.5975573777. The cubic root of 30909125 is about 313.8308046241.

The spelling of 30909125 in words is "thirty million, nine hundred nine thousand, one hundred twenty-five".