25456085656 has 16 divisors (see below), whose sum is σ = 48840165000. Its totient is φ = 12432041664.

The previous prime is 25456085647. The next prime is 25456085723. The reversal of 25456085656 is 65658065452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36999781 + ... + 37000468.

Almost surely, 2^25456085656 is an apocalyptic number.

It is an amenable number.

25456085656 is a deficient number, since it is larger than the sum of its proper divisors (23384079344).

25456085656 is a wasteful number, since it uses less digits than its factorization.

25456085656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74000298 (or 74000294 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 52.

The spelling of 25456085656 in words is "twenty-five billion, four hundred fifty-six million, eighty-five thousand, six hundred fifty-six".