265165 has 8 divisors (see below), whose sum is σ = 321048. Its totient is φ = 210240.

The previous prime is 265163. The next prime is 265169. The reversal of 265165 is 561562.

It can be written as a sum of positive squares in 4 ways, for example, as 17161 + 248004 = 131^2 + 498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 265165 - 2¹ = 265163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759 + ... + 1051.

It is an arithmetic number, because the mean of its divisors is an integer number (40131).

2²⁶⁵¹⁶⁵ is an apocalyptic number.

It is an amenable number.

265165 is a deficient number, since it is larger than the sum of its proper divisors (55883).

265165 is a wasteful number, since it uses less digits than its factorization.

265165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 1800, while the sum is 25.

The square root of 265165 is about 514.9417442779. The cubic root of 265165 is about 64.2449112030.

The spelling of 265165 in words is "two hundred sixty-five thousand, one hundred sixty-five".