30693925 has 12 divisors (see below), whose sum is σ = 40299876. Its totient is φ = 23110400.

The previous prime is 30693907. The next prime is 30693931. The reversal of 30693925 is 52939603.

It can be written as a sum of positive squares in 6 ways, for example, as 641601 + 30052324 = 801^2 + 5482^2 .

It is not a de Polignac number, because 30693925 - 2¹⁵ = 30661157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35686 + ... + 36535.

It is an arithmetic number, because the mean of its divisors is an integer number (3358323).

Almost surely, 2^30693925 is an apocalyptic number.

It is an amenable number.

30693925 is a deficient number, since it is larger than the sum of its proper divisors (9605951).

30693925 is a wasteful number, since it uses less digits than its factorization.

30693925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72248 (or 72243 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 30693925 is about 5540.2098335713. The cubic root of 30693925 is about 313.1007749488.

The spelling of 30693925 in words is "thirty million, six hundred ninety-three thousand, nine hundred twenty-five".