25395386816 has 28 divisors (see below), whose sum is σ = 50399030520. Its totient is φ = 12696418560.

The previous prime is 25395386789. The next prime is 25395386843. The reversal of 25395386816 is 61868359352.

It is an interprime number because it is at equal distance from previous prime (25395386789) and next prime (25395386843).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1261115 + ... + 1281093.

Almost surely, 2^25395386816 is an apocalyptic number.

It is an amenable number.

25395386816 is a deficient number, since it is larger than the sum of its proper divisors (25003643704).

25395386816 is a wasteful number, since it uses less digits than its factorization.

25395386816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39852 (or 39842 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 56.

The spelling of 25395386816 in words is "twenty-five billion, three hundred ninety-five million, three hundred eighty-six thousand, eight hundred sixteen".