125157577566 has 64 divisors (see below), whose sum is σ = 293498380800. Its totient is φ = 34842049536.

The previous prime is 125157577529. The next prime is 125157577579. The reversal of 125157577566 is 665775751521.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56530 + ... + 503498.

It is an arithmetic number, because the mean of its divisors is an integer number (4585912200).

Almost surely, 2^125157577566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125157577566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146749190400).

125157577566 is an abundant number, since it is smaller than the sum of its proper divisors (168340803234).

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

125157577566 is a wasteful number, since it uses less digits than its factorization.

125157577566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447153.

The product of its digits is 15435000, while the sum is 57.

The spelling of 125157577566 in words is "one hundred twenty-five billion, one hundred fifty-seven million, five hundred seventy-seven thousand, five hundred sixty-six".