125885372656 has 80 divisors (see below), whose sum is σ = 259037349120. Its totient is φ = 59136168960.

The previous prime is 125885372617. The next prime is 125885372707. The reversal of 125885372656 is 656273588521.

It is a self number, because there is not a number n which added to its sum of digits gives 125885372656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46918291 + ... + 46920973.

It is an arithmetic number, because the mean of its divisors is an integer number (3237966864).

Almost surely, 2^125885372656 is an apocalyptic number.

125885372656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125885372656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129518674560).

125885372656 is an abundant number, since it is smaller than the sum of its proper divisors (133151976464).

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

125885372656 is a wasteful number, since it uses less digits than its factorization.

125885372656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4934 (or 4928 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 58.

The spelling of 125885372656 in words is "one hundred twenty-five billion, eight hundred eighty-five million, three hundred seventy-two thousand, six hundred fifty-six".