125663437540674 has 24 divisors (see below), whose sum is σ = 297022670551152. Its totient is φ = 38079829557720.

The previous prime is 125663437540651. The next prime is 125663437540759. The reversal of 125663437540674 is 476045734366521.

125663437540674 is a `hidden beast` number, since 1 + 2 + 5 + 66 + 34 + 3 + 75 + 406 + 74 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 317331912784 + ... + 317331913179.

It is an arithmetic number, because the mean of its divisors is an integer number (12375944606298).

Almost surely, 2^{125663437540674} is an apocalyptic number.

125663437540674 is an abundant number, since it is smaller than the sum of its proper divisors (171359233010478).

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

125663437540674 is a wasteful number, since it uses less digits than its factorization.

125663437540674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634663825982 (or 634663825979 counting only the distinct ones).

The product of its (nonzero) digits is 304819200, while the sum is 63.

The spelling of 125663437540674 in words is "one hundred twenty-five trillion, six hundred sixty-three billion, four hundred thirty-seven million, five hundred forty thousand, six hundred seventy-four".