125557257056 has 48 divisors (see below), whose sum is σ = 308186000640. Its totient is φ = 48918410880.

The previous prime is 125557257011. The next prime is 125557257079. The reversal of 125557257056 is 650752755521.

It is a junction number, because it is equal to n+sod(n) for n = 125557256995 and 125557257013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25475876 + ... + 25480803.

It is an arithmetic number, because the mean of its divisors is an integer number (6420541680).

Almost surely, 2^125557257056 is an apocalyptic number.

125557257056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125557257056 is an abundant number, since it is smaller than the sum of its proper divisors (182628743584).

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

125557257056 is a wasteful number, since it uses less digits than its factorization.

125557257056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50956707 (or 50956699 counting only the distinct ones).

The product of its (nonzero) digits is 3675000, while the sum is 50.

The spelling of 125557257056 in words is "one hundred twenty-five billion, five hundred fifty-seven million, two hundred fifty-seven thousand, fifty-six".