125156266880 has 128 divisors (see below), whose sum is σ = 305434022400. Its totient is φ = 49026908160.

The previous prime is 125156266871. The next prime is 125156266913. The reversal of 125156266880 is 88662651521.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×125156266880² (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 15 ways as a sum of consecutive naturals, for example, 9089441 + ... + 9103199.

It is an arithmetic number, because the mean of its divisors is an integer number (2386203300).

Almost surely, 2^125156266880 is an apocalyptic number.

125156266880 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 125156266880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152717011200).

125156266880 is an abundant number, since it is smaller than the sum of its proper divisors (180277755520).

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

125156266880 is a wasteful number, since it uses less digits than its factorization.

125156266880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14072 (or 14060 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 125156266880 in words is "one hundred twenty-five billion, one hundred fifty-six million, two hundred sixty-six thousand, eight hundred eighty".