25868218896 has 135 divisors (see below), whose sum is σ = 78468419757. Its totient is φ = 7951731840.

The previous prime is 25868218877. The next prime is 25868218913. The reversal of 25868218896 is 69881286852.

The square root of 25868218896 is 160836.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3826659600 + 22041559296 = 61860^2 + 148464^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25089901 + ... + 25090931.

Almost surely, 2^25868218896 is an apocalyptic number.

25868218896 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25868218896 is the 160836-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25868218896

25868218896 is an abundant number, since it is smaller than the sum of its proper divisors (52600200861).

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

25868218896 is a wasteful number, since it uses less digits than its factorization.

25868218896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102 (or 1049 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 63.

The spelling of 25868218896 in words is "twenty-five billion, eight hundred sixty-eight million, two hundred eighteen thousand, eight hundred ninety-six".