25719660256 has 24 divisors (see below), whose sum is σ = 51348762864. Its totient is φ = 12678704640.

The previous prime is 25719660227. The next prime is 25719660257. The reversal of 25719660256 is 65206691752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25719660257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5657865 + ... + 5662408.

It is an arithmetic number, because the mean of its divisors is an integer number (2139531786).

Almost surely, 2^25719660256 is an apocalyptic number.

It is an amenable number.

25719660256 is a deficient number, since it is larger than the sum of its proper divisors (25629102608).

25719660256 is a wasteful number, since it uses less digits than its factorization.

25719660256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11320354 (or 11320346 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 25719660256 in words is "twenty-five billion, seven hundred nineteen million, six hundred sixty thousand, two hundred fifty-six".