26085109 has 2 divisors, whose sum is σ = 26085110. Its totient is φ = 26085108.

The previous prime is 26085091. The next prime is 26085121. The reversal of 26085109 is 90158062.

Together with previous prime (26085091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20277009 + 5808100 = 4503^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 26085109 - 2¹¹ = 26083061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26085149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13042554 + 13042555.

It is an arithmetic number, because the mean of its divisors is an integer number (13042555).

Almost surely, 2^26085109 is an apocalyptic number.

It is an amenable number.

26085109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26085109 is an equidigital number, since it uses as much as digits as its factorization.

26085109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 26085109 is about 5107.3583191313. The cubic root of 26085109 is about 296.5725048692.

The spelling of 26085109 in words is "twenty-six million, eighty-five thousand, one hundred nine".