125311054431520 has 96 divisors (see below), whose sum is σ = 301634037976320. Its totient is φ = 49186315376640.

The previous prime is 125311054431461. The next prime is 125311054431527. The reversal of 125311054431520 is 25134450113521.

It is a self number, because there is not a number n which added to its sum of digits gives 125311054431520.

It is not an unprimeable number, because it can be changed into a prime (125311054431527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28350261 + ... + 32470900.

It is an arithmetic number, because the mean of its divisors is an integer number (3142021228920).

Almost surely, 2^{125311054431520} is an apocalyptic number.

125311054431520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125311054431520 is an abundant number, since it is smaller than the sum of its proper divisors (176322983544800).

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

125311054431520 is a wasteful number, since it uses less digits than its factorization.

125311054431520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60821418 (or 60821410 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 125311054431520 in words is "one hundred twenty-five trillion, three hundred eleven billion, fifty-four million, four hundred thirty-one thousand, five hundred twenty".