25168082556 has 48 divisors (see below), whose sum is σ = 62687036160. Its totient is φ = 7835869440.

The previous prime is 25168082551. The next prime is 25168082573. The reversal of 25168082556 is 65528086152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25168082551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 761181 + ... + 793556.

It is an arithmetic number, because the mean of its divisors is an integer number (1305979920).

Almost surely, 2^25168082556 is an apocalyptic number.

It is an amenable number.

25168082556 is an abundant number, since it is smaller than the sum of its proper divisors (37518953604).

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

25168082556 is a wasteful number, since it uses less digits than its factorization.

25168082556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554834 (or 1554832 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 48.

The spelling of 25168082556 in words is "twenty-five billion, one hundred sixty-eight million, eighty-two thousand, five hundred fifty-six".