265220 has 24 divisors (see below), whose sum is σ = 567000. Its totient is φ = 104192.

The previous prime is 265207. The next prime is 265231. The reversal of 265220 is 22562.

265220 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 1024 + 264196 = 32^2 + 514^2 .

It is an unprimeable number.

265220 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 7 ways as a sum of consecutive naturals, for example, 1706 + ... + 1854.

It is an arithmetic number, because the mean of its divisors is an integer number (23625).

2²⁶⁵²²⁰ is an apocalyptic number.

265220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265220 is an abundant number, since it is smaller than the sum of its proper divisors (301780).

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

265220 is a wasteful number, since it uses less digits than its factorization.

265220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 265220 is about 514.9951456082. The cubic root of 265220 is about 64.2493527467.

Adding to 265220 its reverse (22562), we get a palindrome (287782).

The spelling of 265220 in words is "two hundred sixty-five thousand, two hundred twenty".