25808361072 has 40 divisors (see below), whose sum is σ = 71800185744. Its totient is φ = 7941033984.

The previous prime is 25808361071. The next prime is 25808361097. The reversal of 25808361072 is 27016380852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25808361071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20679153 + ... + 20680400.

Almost surely, 2^25808361072 is an apocalyptic number.

It is an amenable number.

25808361072 is an abundant number, since it is smaller than the sum of its proper divisors (45991824672).

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

25808361072 is a wasteful number, since it uses less digits than its factorization.

25808361072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41359577 (or 41359571 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 25808361072 in words is "twenty-five billion, eight hundred eight million, three hundred sixty-one thousand, seventy-two".