25893654664 has 32 divisors (see below), whose sum is σ = 48876347520. Its totient is φ = 12860254656.

The previous prime is 25893654659. The next prime is 25893654671. The reversal of 25893654664 is 46645639852.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25893654599 and 25893654608.

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 7 ways as a sum of consecutive naturals, for example, 701617 + ... + 737599.

It is an arithmetic number, because the mean of its divisors is an integer number (1527385860).

Almost surely, 2^25893654664 is an apocalyptic number.

It is an amenable number.

25893654664 is a deficient number, since it is larger than the sum of its proper divisors (22982692856).

25893654664 is a wasteful number, since it uses less digits than its factorization.

25893654664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36589 (or 36585 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 58.

It can be divided in two parts, 258936 and 54664, that added together give a square (313600 = 560²).

The spelling of 25893654664 in words is "twenty-five billion, eight hundred ninety-three million, six hundred fifty-four thousand, six hundred sixty-four".