26297325281 has 4 divisors (see below), whose sum is σ = 26410189572. Its totient is φ = 26184460992.

The previous prime is 26297325247. The next prime is 26297325289. The reversal of 26297325281 is 18252379262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2642885281 + 23654440000 = 51409^2 + 153800^2 .

It is a cyclic number.

It is not a de Polignac number, because 26297325281 - 2⁶ = 26297325217 is a prime.

It is a super-2 number, since 2×26297325281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26297325289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56431796 + ... + 56432261.

It is an arithmetic number, because the mean of its divisors is an integer number (6602547393).

Almost surely, 2^26297325281 is an apocalyptic number.

It is an amenable number.

26297325281 is a deficient number, since it is larger than the sum of its proper divisors (112864291).

26297325281 is a wasteful number, since it uses less digits than its factorization.

26297325281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112864290.

The product of its digits is 725760, while the sum is 47.

The spelling of 26297325281 in words is "twenty-six billion, two hundred ninety-seven million, three hundred twenty-five thousand, two hundred eighty-one".