204265 has 4 divisors (see below), whose sum is σ = 245124. Its totient is φ = 163408.

The previous prime is 204251. The next prime is 204299. The reversal of 204265 is 562402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 46656 = 397^2 + 216^2 .

It is a cyclic number.

It is not a de Polignac number, because 204265 - 2⁵ = 204233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20422 + ... + 20431.

It is an arithmetic number, because the mean of its divisors is an integer number (61281).

2²⁰⁴²⁶⁵ is an apocalyptic number.

It is an amenable number.

204265 is a deficient number, since it is larger than the sum of its proper divisors (40859).

204265 is an equidigital number, since it uses as much as digits as its factorization.

204265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40858.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 204265 is about 451.9568563480. The cubic root of 204265 is about 58.8931322180.

Adding to 204265 its reverse (562402), we get a palindrome (766667).

The spelling of 204265 in words is "two hundred four thousand, two hundred sixty-five".