25813286874 has 96 divisors (see below), whose sum is σ = 62703775680. Its totient is φ = 7931146752.

The previous prime is 25813286869. The next prime is 25813286899. The reversal of 25813286874 is 47868231852.

25813286874 is a `hidden beast` number, since 258 + 1 + 328 + 68 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 25813286874.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303882 + ... + 379434.

It is an arithmetic number, because the mean of its divisors is an integer number (653164330).

Almost surely, 2^25813286874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25813286874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31351887840).

25813286874 is an abundant number, since it is smaller than the sum of its proper divisors (36890488806).

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

25813286874 is a wasteful number, since it uses less digits than its factorization.

25813286874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75626 (or 75614 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 25813286874 in words is "twenty-five billion, eight hundred thirteen million, two hundred eighty-six thousand, eight hundred seventy-four".