25682559664 has 10 divisors (see below), whose sum is σ = 49759959380. Its totient is φ = 12841279824.

The previous prime is 25682559629. The next prime is 25682559689. The reversal of 25682559664 is 46695528652.

It is a junction number, because it is equal to n+sod(n) for n = 25682559599 and 25682559608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802579974 + ... + 802580005.

It is an arithmetic number, because the mean of its divisors is an integer number (4975995938).

Almost surely, 2^25682559664 is an apocalyptic number.

It is an amenable number.

25682559664 is a deficient number, since it is larger than the sum of its proper divisors (24077399716).

25682559664 is a wasteful number, since it uses less digits than its factorization.

25682559664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605159987 (or 1605159981 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 58.

The spelling of 25682559664 in words is "twenty-five billion, six hundred eighty-two million, five hundred fifty-nine thousand, six hundred sixty-four".