26265085109 has 2 divisors, whose sum is σ = 26265085110. Its totient is φ = 26265085108.

The previous prime is 26265085039. The next prime is 26265085127. The reversal of 26265085109 is 90158056262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21402812209 + 4862272900 = 146297^2 + 69730^2 .

It is a cyclic number.

It is not a de Polignac number, because 26265085109 - 2¹² = 26265081013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26265085109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26265085159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13132542554 + 13132542555.

It is an arithmetic number, because the mean of its divisors is an integer number (13132542555).

Almost surely, 2^26265085109 is an apocalyptic number.

It is an amenable number.

26265085109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26265085109 is an equidigital number, since it uses as much as digits as its factorization.

26265085109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 26265085109 in words is "twenty-six billion, two hundred sixty-five million, eighty-five thousand, one hundred nine".