125501656 has 64 divisors (see below), whose sum is σ = 281594880. Its totient is φ = 51313920.

The previous prime is 125501641. The next prime is 125501683. The reversal of 125501656 is 656105521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107331 + ... + 108493.

It is an arithmetic number, because the mean of its divisors is an integer number (4399920).

Almost surely, 2^125501656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125501656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140797440).

125501656 is an abundant number, since it is smaller than the sum of its proper divisors (156093224).

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

125501656 is a wasteful number, since it uses less digits than its factorization.

125501656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 125501656 is about 11202.7521618574. The cubic root of 125501656 is about 500.6679818697.

The spelling of 125501656 in words is "one hundred twenty-five million, five hundred one thousand, six hundred fifty-six".