225065 has 4 divisors (see below), whose sum is σ = 270084. Its totient is φ = 180048.

The previous prime is 225061. The next prime is 225067. The reversal of 225065 is 560522.

It is a happy number.

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 34969 + 190096 = 187^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 225065 - 2² = 225061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225061) by changing a digit.

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, 22502 + ... + 22511.

It is an arithmetic number, because the mean of its divisors is an integer number (67521).

2²²⁵⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

225065 is a deficient number, since it is larger than the sum of its proper divisors (45019).

225065 is an equidigital number, since it uses as much as digits as its factorization.

225065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45018.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 225065 is about 474.4101600936. The cubic root of 225065 is about 60.8278763271.

Adding to 225065 its reverse (560522), we get a palindrome (785587).

The spelling of 225065 in words is "two hundred twenty-five thousand, sixty-five".