125121183523840 has 88 divisors (see below), whose sum is σ = 343021959035712. Its totient is φ = 42898691481600.

The previous prime is 125121183523801. The next prime is 125121183523871. The reversal of 125121183523840 is 48325381121521.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745516386 + ... + 1745588065.

It is an arithmetic number, because the mean of its divisors is an integer number (3897976807224).

Almost surely, 2^{125121183523840} is an apocalyptic number.

125121183523840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125121183523840 is an abundant number, since it is smaller than the sum of its proper divisors (217900775511872).

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

125121183523840 is an equidigital number, since it uses as much as digits as its factorization.

125121183523840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491104483 (or 3491104465 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 125121183523840 in words is "one hundred twenty-five trillion, one hundred twenty-one billion, one hundred eighty-three million, five hundred twenty-three thousand, eight hundred forty".