25782782808 has 32 divisors (see below), whose sum is σ = 64498662000. Its totient is φ = 8588700288.

The previous prime is 25782782797. The next prime is 25782782813. The reversal of 25782782808 is 80828728752.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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, 309591 + ... + 383942.

Almost surely, 2^25782782808 is an apocalyptic number.

It is an amenable number.

25782782808 is an abundant number, since it is smaller than the sum of its proper divisors (38715879192).

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

25782782808 is a wasteful number, since it uses less digits than its factorization.

25782782808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695091 (or 695087 counting only the distinct ones).

The product of its (nonzero) digits is 8028160, while the sum is 57.

The spelling of 25782782808 in words is "twenty-five billion, seven hundred eighty-two million, seven hundred eighty-two thousand, eight hundred eight".