30725599421 has 16 divisors (see below), whose sum is σ = 35157456000. Its totient is φ = 26579435520.

The previous prime is 30725599369. The next prime is 30725599427. The reversal of 30725599421 is 12499552703.

It is a de Polignac number, because none of the positive numbers 2^k-30725599421 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 (30725599427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265796 + ... + 363453.

It is an arithmetic number, because the mean of its divisors is an integer number (2197341000).

Almost surely, 2^30725599421 is an apocalyptic number.

It is an amenable number.

30725599421 is a deficient number, since it is larger than the sum of its proper divisors (4431856579).

30725599421 is a wasteful number, since it uses less digits than its factorization.

30725599421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629476.

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 30725599421 in words is "thirty billion, seven hundred twenty-five million, five hundred ninety-nine thousand, four hundred twenty-one".