25726936656 has 40 divisors (see below), whose sum is σ = 67208019840. Its totient is φ = 8479288576.

The previous prime is 25726936589. The next prime is 25726936687. The reversal of 25726936656 is 65663962752.

It is a junction number, because it is equal to n+sod(n) for n = 25726936596 and 25726936605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3006840 + ... + 3015383.

It is an arithmetic number, because the mean of its divisors is an integer number (1680200496).

Almost surely, 2^25726936656 is an apocalyptic number.

It is an amenable number.

25726936656 is an abundant number, since it is smaller than the sum of its proper divisors (41481083184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25726936656 is a wasteful number, since it uses less digits than its factorization.

25726936656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022323 (or 6022317 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 57.

The spelling of 25726936656 in words is "twenty-five billion, seven hundred twenty-six million, nine hundred thirty-six thousand, six hundred fifty-six".