25593938965 has 48 divisors (see below), whose sum is σ = 37336681728. Its totient is φ = 16761744384.

The previous prime is 25593938947. The next prime is 25593938983. The reversal of 25593938965 is 56983939552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25593938947) and next prime (25593938983).

It is not a de Polignac number, because 25593938965 - 2¹⁵ = 25593906197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25593938897 and 25593938906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4183749 + ... + 4189861.

It is an arithmetic number, because the mean of its divisors is an integer number (777847536).

Almost surely, 2^25593938965 is an apocalyptic number.

It is an amenable number.

25593938965 is a deficient number, since it is larger than the sum of its proper divisors (11742742763).

25593938965 is a wasteful number, since it uses less digits than its factorization.

25593938965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6898 (or 6891 counting only the distinct ones).

The product of its digits is 78732000, while the sum is 64.

The spelling of 25593938965 in words is "twenty-five billion, five hundred ninety-three million, nine hundred thirty-eight thousand, nine hundred sixty-five".