26259613 has 2 divisors, whose sum is σ = 26259614. Its totient is φ = 26259612.

The previous prime is 26259593. The next prime is 26259631. The reversal of 26259613 is 31695262.

Together with next prime (26259631) 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., 22024249 + 4235364 = 4693^2 + 2058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26259613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26259643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13129806 + 13129807.

It is an arithmetic number, because the mean of its divisors is an integer number (13129807).

Almost surely, 2^26259613 is an apocalyptic number.

It is an amenable number.

26259613 is a deficient number, since it is larger than the sum of its proper divisors (1).

26259613 is an equidigital number, since it uses as much as digits as its factorization.

26259613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 34.

The square root of 26259613 is about 5124.4134298474. The cubic root of 26259613 is about 297.2323718910.

The spelling of 26259613 in words is "twenty-six million, two hundred fifty-nine thousand, six hundred thirteen".