125021135544 has 64 divisors (see below), whose sum is σ = 317258311680. Its totient is φ = 41047440000.

The previous prime is 125021135539. The next prime is 125021135587. The reversal of 125021135544 is 445531120521.

It is a super-2 number, since 2×125021135544² (a number of 23 digits) contains 22 as substring.

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, 1773369 + ... + 1842519.

It is an arithmetic number, because the mean of its divisors is an integer number (4957161120).

Almost surely, 2^125021135544 is an apocalyptic number.

It is an amenable number.

125021135544 is an abundant number, since it is smaller than the sum of its proper divisors (192237176136).

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

125021135544 is a wasteful number, since it uses less digits than its factorization.

125021135544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70292 (or 70288 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 125021135544 in words is "one hundred twenty-five billion, twenty-one million, one hundred thirty-five thousand, five hundred forty-four".