25842898566 has 48 divisors (see below), whose sum is σ = 57530350800. Its totient is φ = 8377971264.

The previous prime is 25842898547. The next prime is 25842898579. The reversal of 25842898566 is 66589824852.

25842898566 is a `hidden beast` number, since 25 + 8 + 42 + 8 + 9 + 8 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1930725 + ... + 1944063.

It is an arithmetic number, because the mean of its divisors is an integer number (1198548975).

Almost surely, 2^25842898566 is an apocalyptic number.

25842898566 is an abundant number, since it is smaller than the sum of its proper divisors (31687452234).

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

25842898566 is a wasteful number, since it uses less digits than its factorization.

25842898566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16293 (or 16290 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 63.

The spelling of 25842898566 in words is "twenty-five billion, eight hundred forty-two million, eight hundred ninety-eight thousand, five hundred sixty-six".