125016664256 has 28 divisors (see below), whose sum is σ = 270632666760. Its totient is φ = 56825756160.

The previous prime is 125016664117. The next prime is 125016664271. The reversal of 125016664256 is 652466610521.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88789541 + ... + 88790948.

Almost surely, 2^125016664256 is an apocalyptic number.

125016664256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125016664256 is an abundant number, since it is smaller than the sum of its proper divisors (145616002504).

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

125016664256 is a wasteful number, since it uses less digits than its factorization.

125016664256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177580512 (or 177580502 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 125016664256 in words is "one hundred twenty-five billion, sixteen million, six hundred sixty-four thousand, two hundred fifty-six".