26840924225 has 12 divisors (see below), whose sum is σ = 33612281340. Its totient is φ = 21260136000.

The previous prime is 26840924197. The next prime is 26840924233. The reversal of 26840924225 is 52242904862.

It is a Cunningham number, because it is equal to 163832²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 26840924224 = 1^2 + 163832^2 .

It is not a de Polignac number, because 26840924225 - 2²² = 26836729921 is a prime.

It is a super-3 number, since 3×26840924225³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5312510 + ... + 5317559.

It is an arithmetic number, because the mean of its divisors is an integer number (2801023445).

Almost surely, 2^26840924225 is an apocalyptic number.

26840924225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26840924225 is a deficient number, since it is larger than the sum of its proper divisors (6771357115).

26840924225 is a wasteful number, since it uses less digits than its factorization.

26840924225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630180 (or 10630175 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 26840924225 in words is "twenty-six billion, eight hundred forty million, nine hundred twenty-four thousand, two hundred twenty-five".