25871768356 has 24 divisors (see below), whose sum is σ = 51794273216. Its totient is φ = 11077028640.

The previous prime is 25871768353. The next prime is 25871768383. The reversal of 25871768356 is 65386717852.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25871768356.

It is not an unprimeable number, because it can be changed into a prime (25871768353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423906 + ... + 481081.

Almost surely, 2^25871768356 is an apocalyptic number.

It is an amenable number.

25871768356 is an abundant number, since it is smaller than the sum of its proper divisors (25922504860).

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

25871768356 is a wasteful number, since it uses less digits than its factorization.

25871768356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906019 (or 906017 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 58.

The spelling of 25871768356 in words is "twenty-five billion, eight hundred seventy-one million, seven hundred sixty-eight thousand, three hundred fifty-six".