125621056 has 28 divisors (see below), whose sum is σ = 271942560. Its totient is φ = 57100160.

The previous prime is 125621033. The next prime is 125621057. The reversal of 125621056 is 650126521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125621057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88516 + ... + 89923.

Almost surely, 2^125621056 is an apocalyptic number.

125621056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125621056 is an abundant number, since it is smaller than the sum of its proper divisors (146321504).

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

125621056 is a wasteful number, since it uses less digits than its factorization.

125621056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178462 (or 178452 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 125621056 is about 11208.0799426128. The cubic root of 125621056 is about 500.8267070243.

Adding to 125621056 its reverse (650126521), we get a palindrome (775747577).

The spelling of 125621056 in words is "one hundred twenty-five million, six hundred twenty-one thousand, fifty-six".