25489893696 has 28 divisors (see below), whose sum is σ = 67442010912. Its totient is φ = 8496631168.

The previous prime is 25489893659. The next prime is 25489893713. The reversal of 25489893696 is 69639898452.

It is a self number, because there is not a number n which added to its sum of digits gives 25489893696.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 66379740 + ... + 66380123.

Almost surely, 2^25489893696 is an apocalyptic number.

It is an amenable number.

25489893696 is an abundant number, since it is smaller than the sum of its proper divisors (41952117216).

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

25489893696 is a wasteful number, since it uses less digits than its factorization.

25489893696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132759878 (or 132759868 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 69.

The spelling of 25489893696 in words is "twenty-five billion, four hundred eighty-nine million, eight hundred ninety-three thousand, six hundred ninety-six".