125044656 has 80 divisors (see below), whose sum is σ = 373154688. Its totient is φ = 35660800.

The previous prime is 125044651. The next prime is 125044663. The reversal of 125044656 is 656440521.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (125044651) by changing a digit.

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, 2011 + ... + 15941.

Almost surely, 2^125044656 is an apocalyptic number.

125044656 is a gapful number since it is divisible by the number (16) 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 125044656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186577344).

125044656 is an abundant number, since it is smaller than the sum of its proper divisors (248110032).

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

125044656 is a wasteful number, since it uses less digits than its factorization.

125044656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13970 (or 13964 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 125044656 is about 11182.3367861999. The cubic root of 125044656 is about 500.0595342444.

The spelling of 125044656 in words is "one hundred twenty-five million, forty-four thousand, six hundred fifty-six".