125815064080 has 40 divisors (see below), whose sum is σ = 292552518744. Its totient is φ = 50320435200.

The previous prime is 125815064041. The next prime is 125815064107. The reversal of 125815064080 is 80460518521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40230731776 + 85584332304 = 200576^2 + 292548^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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

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, 679090 + ... + 844270.

Almost surely, 2^125815064080 is an apocalyptic number.

125815064080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125815064080 is an abundant number, since it is smaller than the sum of its proper divisors (166737454664).

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

125815064080 is a wasteful number, since it uses less digits than its factorization.

125815064080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174715 (or 174709 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 125815064080 in words is "one hundred twenty-five billion, eight hundred fifteen million, sixty-four thousand, eighty".