25788538964 has 12 divisors (see below), whose sum is σ = 45144215424. Its totient is φ = 12890191704.

The previous prime is 25788538957. The next prime is 25788538999. The reversal of 25788538964 is 46983588752.

It is a self number, because there is not a number n which added to its sum of digits gives 25788538964.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1005194 + ... + 1030529.

It is an arithmetic number, because the mean of its divisors is an integer number (3762017952).

Almost surely, 2^25788538964 is an apocalyptic number.

It is an amenable number.

25788538964 is a deficient number, since it is larger than the sum of its proper divisors (19355676460).

25788538964 is a wasteful number, since it uses less digits than its factorization.

25788538964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038894 (or 2038892 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 65.

The spelling of 25788538964 in words is "twenty-five billion, seven hundred eighty-eight million, five hundred thirty-eight thousand, nine hundred sixty-four".