26255617 has 4 divisors (see below), whose sum is σ = 26751060. Its totient is φ = 25760176.

The previous prime is 26255611. The next prime is 26255629. The reversal of 26255617 is 71655262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19722481 + 6533136 = 4441^2 + 2556^2 .

It is a cyclic number.

It is not a de Polignac number, because 26255617 - 2³ = 26255609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26255611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247642 + ... + 247747.

It is an arithmetic number, because the mean of its divisors is an integer number (6687765).

Almost surely, 2^26255617 is an apocalyptic number.

It is an amenable number.

26255617 is a deficient number, since it is larger than the sum of its proper divisors (495443).

26255617 is an equidigital number, since it uses as much as digits as its factorization.

26255617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495442.

The product of its digits is 25200, while the sum is 34.

The square root of 26255617 is about 5124.0235167298. The cubic root of 26255617 is about 297.2172942277.

The spelling of 26255617 in words is "twenty-six million, two hundred fifty-five thousand, six hundred seventeen".