30312925 has 6 divisors (see below), whose sum is σ = 37588058. Its totient is φ = 24250320.

The previous prime is 30312911. The next prime is 30312967. The reversal of 30312925 is 52921303.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 139876 + 30173049 = 374^2 + 5493^2 .

It is not a de Polignac number, because 30312925 - 2¹¹ = 30310877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1212517 = 30312925 / (3 + 0 + 3 + 1 + 2 + 9 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30312925.

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, 606234 + ... + 606283.

Almost surely, 2^30312925 is an apocalyptic number.

It is an amenable number.

30312925 is a deficient number, since it is larger than the sum of its proper divisors (7275133).

30312925 is a wasteful number, since it uses less digits than its factorization.

30312925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212527 (or 1212522 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 30312925 is about 5505.7174827628. The cubic root of 30312925 is about 311.7998833152.

The spelling of 30312925 in words is "thirty million, three hundred twelve thousand, nine hundred twenty-five".