125680027720 has 32 divisors (see below), whose sum is σ = 304532376120. Its totient is φ = 46404933120.

The previous prime is 125680027709. The next prime is 125680027741. The reversal of 125680027720 is 27720086521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44109240484 + 81570787236 = 210022^2 + 285606^2 .

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, 120845661 + ... + 120846700.

Almost surely, 2^125680027720 is an apocalyptic number.

125680027720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125680027720 is an abundant number, since it is smaller than the sum of its proper divisors (178852348400).

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

125680027720 is a wasteful number, since it uses less digits than its factorization.

125680027720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241692385 (or 241692381 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 125680027720 in words is "one hundred twenty-five billion, six hundred eighty million, twenty-seven thousand, seven hundred twenty".