26365 has 4 divisors (see below), whose sum is σ = 31644. Its totient is φ = 21088.

The previous prime is 26357. The next prime is 26371. The reversal of 26365 is 56362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56362 = 2 ⋅28181.

It can be written as a sum of positive squares in 2 ways, for example, as 11236 + 15129 = 106^2 + 123^2 .

It is a cyclic number.

It is not a de Polignac number, because 26365 - 2³ = 26357 is a prime.

It is a super-2 number, since 2×26365² = 1390226450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

26365 is a lucky number.

It is a plaindrome in base 11.

It is a nialpdrome in base 14.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2632 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (7911).

2²⁶³⁶⁵ is an apocalyptic number.

It is an amenable number.

26365 is a deficient number, since it is larger than the sum of its proper divisors (5279).

26365 is an equidigital number, since it uses as much as digits as its factorization.

26365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278.

The product of its digits is 1080, while the sum is 22.

The square root of 26365 is about 162.3730273167. The cubic root of 26365 is about 29.7629466048.

The spelling of 26365 in words is "twenty-six thousand, three hundred sixty-five".