25804642736 has 40 divisors (see below), whose sum is σ = 50519099904. Its totient is φ = 12767641920.

The previous prime is 25804642733. The next prime is 25804642757. The reversal of 25804642736 is 63724640852.

It is not an unprimeable number, because it can be changed into a prime (25804642733) 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, 2584025 + ... + 2593991.

Almost surely, 2^25804642736 is an apocalyptic number.

It is an amenable number.

25804642736 is a deficient number, since it is larger than the sum of its proper divisors (24714457168).

25804642736 is a wasteful number, since it uses less digits than its factorization.

25804642736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11649 (or 11643 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 47.

The spelling of 25804642736 in words is "twenty-five billion, eight hundred four million, six hundred forty-two thousand, seven hundred thirty-six".