26925792809 has 2 divisors, whose sum is σ = 26925792810. Its totient is φ = 26925792808.

The previous prime is 26925792781. The next prime is 26925792811. The reversal of 26925792809 is 90829752962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26621185600 + 304607209 = 163160^2 + 17453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26925792809 is a prime.

It is a super-2 number, since 2×26925792809² (a number of 22 digits) contains 22 as substring.

Together with 26925792811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26925792899) 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 as a sum of consecutive naturals, namely, 13462896404 + 13462896405.

It is an arithmetic number, because the mean of its divisors is an integer number (13462896405).

Almost surely, 2^26925792809 is an apocalyptic number.

It is an amenable number.

26925792809 is a deficient number, since it is larger than the sum of its proper divisors (1).

26925792809 is an equidigital number, since it uses as much as digits as its factorization.

26925792809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 26925792809 in words is "twenty-six billion, nine hundred twenty-five million, seven hundred ninety-two thousand, eight hundred nine".