125751720 has 64 divisors (see below), whose sum is σ = 399453120. Its totient is φ = 31560704.

The previous prime is 125751719. The next prime is 125751727. The reversal of 125751720 is 27157521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (125751727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28782 + ... + 32861.

It is an arithmetic number, because the mean of its divisors is an integer number (6241455).

Almost surely, 2^125751720 is an apocalyptic number.

125751720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125751720 is an abundant number, since it is smaller than the sum of its proper divisors (273701400).

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

125751720 is a wasteful number, since it uses less digits than its factorization.

125751720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61674 (or 61670 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 125751720 is about 11213.9074367501. The cubic root of 125751720 is about 501.0002908353. Note that the first 3 decimals are identical.

The spelling of 125751720 in words is "one hundred twenty-five million, seven hundred fifty-one thousand, seven hundred twenty".