125137637639 has 8 divisors (see below), whose sum is σ = 143075552928. Its totient is φ = 107214999840.

The previous prime is 125137637609. The next prime is 125137637693. The reversal of 125137637639 is 936736731521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125137637639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125137637609) 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, 3801812 + ... + 3834585.

It is an arithmetic number, because the mean of its divisors is an integer number (17884444116).

Almost surely, 2^125137637639 is an apocalyptic number.

125137637639 is a deficient number, since it is larger than the sum of its proper divisors (17937915289).

125137637639 is an equidigital number, since it uses as much as digits as its factorization.

125137637639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638745.

The product of its digits is 4286520, while the sum is 53.

The spelling of 125137637639 in words is "one hundred twenty-five billion, one hundred thirty-seven million, six hundred thirty-seven thousand, six hundred thirty-nine".