30765925 has 6 divisors (see below), whose sum is σ = 38149778. Its totient is φ = 24612720.

The previous prime is 30765893. The next prime is 30765947. The reversal of 30765925 is 52956703.

It can be written as a sum of positive squares in 3 ways, for example, as 636804 + 30129121 = 798^2 + 5489^2 .

It is not a de Polignac number, because 30765925 - 2⁵ = 30765893 is a prime.

It is a super-2 number, since 2×30765925² = 1893084282211250, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 615294 + ... + 615343.

Almost surely, 2^30765925 is an apocalyptic number.

It is an amenable number.

30765925 is a deficient number, since it is larger than the sum of its proper divisors (7383853).

30765925 is a wasteful number, since it uses less digits than its factorization.

30765925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230647 (or 1230642 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 30765925 is about 5546.7039762367. The cubic root of 30765925 is about 313.3454015522.

The spelling of 30765925 in words is "thirty million, seven hundred sixty-five thousand, nine hundred twenty-five".