26305 has 4 divisors (see below), whose sum is σ = 31572. Its totient is φ = 21040.

The previous prime is 26297. The next prime is 26309. The reversal of 26305 is 50362.

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 14641 + 11664 = 121^2 + 108^2 .

It is not a de Polignac number, because 26305 - 2³ = 26297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26309) 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, 2626 + ... + 2635.

It is an arithmetic number, because the mean of its divisors is an integer number (7893).

2²⁶³⁰⁵ is an apocalyptic number.

It is an amenable number.

26305 is a deficient number, since it is larger than the sum of its proper divisors (5267).

26305 is an equidigital number, since it uses as much as digits as its factorization.

26305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 26305 is about 162.1881623301. The cubic root of 26305 is about 29.7403518369.

Adding to 26305 its reverse (50362), we get a palindrome (76667).

The spelling of 26305 in words is "twenty-six thousand, three hundred five".