12537725928 has 128 divisors (see below), whose sum is σ = 40608153600. Its totient is φ = 3132608256.

The previous prime is 12537725821. The next prime is 12537725929. The reversal of 12537725928 is 82952773521.

It is a super-2 number, since 2×12537725928² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12537725929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109576 + ... + 192567.

It is an arithmetic number, because the mean of its divisors is an integer number (317251200).

Almost surely, 2^12537725928 is an apocalyptic number.

It is an amenable number.

12537725928 is an abundant number, since it is smaller than the sum of its proper divisors (28070427672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12537725928 is a wasteful number, since it uses less digits than its factorization.

12537725928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302191 (or 302187 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The spelling of 12537725928 in words is "twelve billion, five hundred thirty-seven million, seven hundred twenty-five thousand, nine hundred twenty-eight".