25946322556 has 96 divisors (see below), whose sum is σ = 63095155200. Its totient is φ = 9013524480.

The previous prime is 25946322551. The next prime is 25946322581. The reversal of 25946322556 is 65522364952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25946322551) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 30921 + ... + 229888.

It is an arithmetic number, because the mean of its divisors is an integer number (657241200).

Almost surely, 2^25946322556 is an apocalyptic number.

It is an amenable number.

25946322556 is an abundant number, since it is smaller than the sum of its proper divisors (37148832644).

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

25946322556 is a wasteful number, since it uses less digits than its factorization.

25946322556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260867 (or 260865 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 49.

The spelling of 25946322556 in words is "twenty-five billion, nine hundred forty-six million, three hundred twenty-two thousand, five hundred fifty-six".