26165 has 4 divisors (see below), whose sum is σ = 31404. Its totient is φ = 20928.

The previous prime is 26161. The next prime is 26171. The reversal of 26165 is 56162.

26165 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56162 = 2 ⋅28081.

It can be written as a sum of positive squares in 2 ways, for example, as 18769 + 7396 = 137^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 26165 - 2² = 26161 is a prime.

It is a Duffinian number.

26165 is strictly pandigital in base 6.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2612 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (7851).

2²⁶¹⁶⁵ is an apocalyptic number.

It is an amenable number.

26165 is a deficient number, since it is larger than the sum of its proper divisors (5239).

26165 is an equidigital number, since it uses as much as digits as its factorization.

26165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238.

The product of its digits is 360, while the sum is 20.

The square root of 26165 is about 161.7559890700. The cubic root of 26165 is about 29.6874967682.

It can be divided in two parts, 26 and 165, that added together give a palindrome (191).

The spelling of 26165 in words is "twenty-six thousand, one hundred sixty-five".