125669856564 has 96 divisors (see below), whose sum is σ = 372421324800. Its totient is φ = 35899290720.

The previous prime is 125669856503. The next prime is 125669856577. The reversal of 125669856564 is 465658966521.

125669856564 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 6 + 9 + 8 + 565 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5703609 + ... + 5725599.

It is an arithmetic number, because the mean of its divisors is an integer number (3879388800).

Almost surely, 2^125669856564 is an apocalyptic number.

125669856564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

125669856564 is an abundant number, since it is smaller than the sum of its proper divisors (246751468236).

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

125669856564 is a wasteful number, since it uses less digits than its factorization.

125669856564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29570 (or 29562 counting only the distinct ones).

The product of its digits is 93312000, while the sum is 63.

The spelling of 125669856564 in words is "one hundred twenty-five billion, six hundred sixty-nine million, eight hundred fifty-six thousand, five hundred sixty-four".