30904400725 has 48 divisors (see below), whose sum is σ = 44678765376. Its totient is φ = 20955776000.

The previous prime is 30904400707. The next prime is 30904400741. The reversal of 30904400725 is 52700440903.

It is not a de Polignac number, because 30904400725 - 2²¹ = 30902303573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 469335 + ... + 531115.

It is an arithmetic number, because the mean of its divisors is an integer number (930807612).

Almost surely, 2^30904400725 is an apocalyptic number.

It is an amenable number.

30904400725 is a deficient number, since it is larger than the sum of its proper divisors (13774364651).

30904400725 is a wasteful number, since it uses less digits than its factorization.

30904400725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61926 (or 61921 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 30904400725 in words is "thirty billion, nine hundred four million, four hundred thousand, seven hundred twenty-five".