125687644084 has 12 divisors (see below), whose sum is σ = 220583618500. Its totient is φ = 62663753088.

The previous prime is 125687644057. The next prime is 125687644087. The reversal of 125687644084 is 480446786521.

It can be written as a sum of positive squares in 2 ways, for example, as 92672754084 + 33014890000 = 304422^2 + 181700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125687644087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45015669 + ... + 45018460.

Almost surely, 2^125687644084 is an apocalyptic number.

It is an amenable number.

125687644084 is a deficient number, since it is larger than the sum of its proper divisors (94895974416).

125687644084 is a wasteful number, since it uses less digits than its factorization.

125687644084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90034482 (or 90034480 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 125687644084 in words is "one hundred twenty-five billion, six hundred eighty-seven million, six hundred forty-four thousand, eighty-four".