125639011380 has 96 divisors (see below), whose sum is σ = 357473217024. Its totient is φ = 32966406144.

The previous prime is 125639011327. The next prime is 125639011397. The reversal of 125639011380 is 83110936521.

It is a super-2 number, since 2×125639011380² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 944469 + ... + 1069251.

It is an arithmetic number, because the mean of its divisors is an integer number (3723679344).

Almost surely, 2^125639011380 is an apocalyptic number.

125639011380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125639011380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178736608512).

125639011380 is an abundant number, since it is smaller than the sum of its proper divisors (231834205644).

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

125639011380 is a wasteful number, since it uses less digits than its factorization.

125639011380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125065 (or 125063 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 125639011380 in words is "one hundred twenty-five billion, six hundred thirty-nine million, eleven thousand, three hundred eighty".