125727698637 has 32 divisors (see below), whose sum is σ = 192994358400. Its totient is φ = 80843083776.

The previous prime is 125727698587. The next prime is 125727698641. The reversal of 125727698637 is 736896727521.

125727698637 is a `hidden beast` number, since 1 + 257 + 276 + 9 + 86 + 37 = 666.

It is not a de Polignac number, because 125727698637 - 2⁶ = 125727698573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125727648637) 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, 660148 + ... + 829005.

It is an arithmetic number, because the mean of its divisors is an integer number (6031073700).

Almost surely, 2^125727698637 is an apocalyptic number.

It is an amenable number.

125727698637 is a deficient number, since it is larger than the sum of its proper divisors (67266659763).

125727698637 is a wasteful number, since it uses less digits than its factorization.

125727698637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489274 (or 1489268 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 125727698637 in words is "one hundred twenty-five billion, seven hundred twenty-seven million, six hundred ninety-eight thousand, six hundred thirty-seven".