125537260720 has 20 divisors (see below), whose sum is σ = 291874131360. Its totient is φ = 50214904256.

The previous prime is 125537260663. The next prime is 125537260729. The reversal of 125537260720 is 27062735521.

It is a tau number, because it is divible by the number of its divisors (20).

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

It is not an unprimeable number, because it can be changed into a prime (125537260729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784607800 + ... + 784607959.

It is an arithmetic number, because the mean of its divisors is an integer number (14593706568).

Almost surely, 2^125537260720 is an apocalyptic number.

125537260720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125537260720 is an abundant number, since it is smaller than the sum of its proper divisors (166336870640).

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

125537260720 is a wasteful number, since it uses less digits than its factorization.

125537260720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569215772 (or 1569215766 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 125537260720 in words is "one hundred twenty-five billion, five hundred thirty-seven million, two hundred sixty thousand, seven hundred twenty".