265005 has 32 divisors (see below), whose sum is σ = 510720. Its totient is φ = 129600.

The previous prime is 265003. The next prime is 265007. The reversal of 265005 is 500562.

It is an interprime number because it is at equal distance from previous prime (265003) and next prime (265007).

It is not a de Polignac number, because 265005 - 2¹ = 265003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1680 + ... + 1830.

It is an arithmetic number, because the mean of its divisors is an integer number (15960).

2²⁶⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

265005 is a deficient number, since it is larger than the sum of its proper divisors (245715).

265005 is a wasteful number, since it uses less digits than its factorization.

265005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 265005 is about 514.7863634558. The cubic root of 265005 is about 64.2319868553.

Adding to 265005 its reverse (500562), we get a palindrome (765567).

The spelling of 265005 in words is "two hundred sixty-five thousand, five".