125865941982 has 64 divisors (see below), whose sum is σ = 280231612416. Its totient is φ = 37363564160.

The previous prime is 125865941977. The next prime is 125865942047. The reversal of 125865941982 is 289149568521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2256643 + ... + 2311745.

It is an arithmetic number, because the mean of its divisors is an integer number (4378618944).

Almost surely, 2^125865941982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125865941982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140115806208).

125865941982 is an abundant number, since it is smaller than the sum of its proper divisors (154365670434).

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

125865941982 is a wasteful number, since it uses less digits than its factorization.

125865941982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55825.

The product of its digits is 12441600, while the sum is 60.

The spelling of 125865941982 in words is "one hundred twenty-five billion, eight hundred sixty-five million, nine hundred forty-one thousand, nine hundred eighty-two".