125812720 has 40 divisors (see below), whose sum is σ = 319109040. Its totient is φ = 45749760.

The previous prime is 125812697. The next prime is 125812727. The reversal of 125812720 is 27218521.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125812727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70605 + ... + 72364.

It is an arithmetic number, because the mean of its divisors is an integer number (7977726).

Almost surely, 2^125812720 is an apocalyptic number.

125812720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125812720 is an abundant number, since it is smaller than the sum of its proper divisors (193296320).

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

125812720 is a wasteful number, since it uses less digits than its factorization.

125812720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142993 (or 142987 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 125812720 is about 11216.6269439614. The cubic root of 125812720 is about 501.0812866195.

The spelling of 125812720 in words is "one hundred twenty-five million, eight hundred twelve thousand, seven hundred twenty".