125551142043520 has 128 divisors (see below), whose sum is σ = 313202706531840. Its totient is φ = 48035855222784.

The previous prime is 125551142043479. The next prime is 125551142043533. The reversal of 125551142043520 is 25340241155521.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 960959319 + ... + 961089961.

It is an arithmetic number, because the mean of its divisors is an integer number (2446896144780).

Almost surely, 2^{125551142043520} is an apocalyptic number.

125551142043520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125551142043520 is an abundant number, since it is smaller than the sum of its proper divisors (187651564488320).

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

125551142043520 is a wasteful number, since it uses less digits than its factorization.

125551142043520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195972 (or 195960 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 125551142043520 in words is "one hundred twenty-five trillion, five hundred fifty-one billion, one hundred forty-two million, forty-three thousand, five hundred twenty".