30390043925 has 6 divisors (see below), whose sum is σ = 37683654498. Its totient is φ = 24312035120.

The previous prime is 30390043843. The next prime is 30390043927. The reversal of 30390043925 is 52934009303.

It can be written as a sum of positive squares in 3 ways, for example, as 1394424964 + 28995618961 = 37342^2 + 170281^2 .

It is not a de Polignac number, because 30390043925 - 2⁸ = 30390043669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30390043927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607800854 + ... + 607800903.

It is an arithmetic number, because the mean of its divisors is an integer number (6280609083).

Almost surely, 2^30390043925 is an apocalyptic number.

It is an amenable number.

30390043925 is a deficient number, since it is larger than the sum of its proper divisors (7293610573).

30390043925 is a wasteful number, since it uses less digits than its factorization.

30390043925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215601767 (or 1215601762 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 38.

The spelling of 30390043925 in words is "thirty billion, three hundred ninety million, forty-three thousand, nine hundred twenty-five".