125115945720 has 32 divisors (see below), whose sum is σ = 375347837520. Its totient is φ = 33364252160.

The previous prime is 125115945701. The next prime is 125115945737. The reversal of 125115945720 is 27549511521.

It is a congruent number.

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, 521316321 + ... + 521316560.

Almost surely, 2^125115945720 is an apocalyptic number.

125115945720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125115945720 is an abundant number, since it is smaller than the sum of its proper divisors (250231891800).

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

125115945720 is a wasteful number, since it uses less digits than its factorization.

125115945720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042632895 (or 1042632891 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 125115945720 in words is "one hundred twenty-five billion, one hundred fifteen million, nine hundred forty-five thousand, seven hundred twenty".