265489 has 16 divisors (see below), whose sum is σ = 338688. Its totient is φ = 202752.

The previous prime is 265483. The next prime is 265493. The reversal of 265489 is 984562.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 265489 - 2⁹ = 264977 is a prime.

Its product of digits (17280) is a multiple of the sum of its prime divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2689 + ... + 2785.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

265489 is a Friedman number, since it can be written as (5^6-8)*(9+4*2), using all its digits and the basic arithmetic operations.

2²⁶⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

265489 is a deficient number, since it is larger than the sum of its proper divisors (73199).

265489 is a wasteful number, since it uses less digits than its factorization.

265489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144.

The product of its digits is 17280, while the sum is 34.

The square root of 265489 is about 515.2562469296. The cubic root of 265489 is about 64.2710670921.

The spelling of 265489 in words is "two hundred sixty-five thousand, four hundred eighty-nine".