265290 has 32 divisors (see below), whose sum is σ = 656640. Its totient is φ = 68544.

The previous prime is 265277. The next prime is 265313. The reversal of 265290 is 92562.

265290 = 66² + 67² + ... + 102².

It is a self number, because there is not a number n which added to its sum of digits gives 265290.

It is an unprimeable number.

265290 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 991 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (20520).

2²⁶⁵²⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328320).

265290 is an abundant number, since it is smaller than the sum of its proper divisors (391350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265290 is a wasteful number, since it uses less digits than its factorization.

265290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 265290 is about 515.0631029301. The cubic root of 265290 is about 64.2550047326.

It can be divided in two parts, 265 and 290, that added together give a palindrome (555).

The spelling of 265290 in words is "two hundred sixty-five thousand, two hundred ninety".