265505 has 4 divisors (see below), whose sum is σ = 318612. Its totient is φ = 212400.

The previous prime is 265493. The next prime is 265511. The reversal of 265505 is 505562.

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 165649 + 99856 = 407^2 + 316^2 .

It is not a de Polignac number, because 265505 - 2⁸ = 265249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26546 + ... + 26555.

It is an arithmetic number, because the mean of its divisors is an integer number (79653).

2²⁶⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

265505 is a deficient number, since it is larger than the sum of its proper divisors (53107).

265505 is an equidigital number, since it uses as much as digits as its factorization.

265505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53106.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 265505 is about 515.2717729509. The cubic root of 265505 is about 64.2723581894.

The spelling of 265505 in words is "two hundred sixty-five thousand, five hundred five".