30897886725 has 48 divisors (see below), whose sum is σ = 56848296000. Its totient is φ = 16453402560.

The previous prime is 30897886639. The next prime is 30897886729. The reversal of 30897886725 is 52768879803.

It is not a de Polignac number, because 30897886725 - 2¹⁰ = 30897885701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30897886729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 405726 + ... + 475824.

It is an arithmetic number, because the mean of its divisors is an integer number (1184339500).

Almost surely, 2^30897886725 is an apocalyptic number.

It is an amenable number.

30897886725 is a deficient number, since it is larger than the sum of its proper divisors (25950409275).

30897886725 is a wasteful number, since it uses less digits than its factorization.

30897886725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70771 (or 70760 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 30897886725 in words is "thirty billion, eight hundred ninety-seven million, eight hundred eighty-six thousand, seven hundred twenty-five".