225515 has 16 divisors (see below), whose sum is σ = 295488. Its totient is φ = 164736.

The previous prime is 225509. The next prime is 225523. The reversal of 225515 is 515522.

It is a cyclic number.

It is not a de Polignac number, because 225515 - 2⁴ = 225499 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225515.

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 15 ways as a sum of consecutive naturals, for example, 4229 + ... + 4281.

It is an arithmetic number, because the mean of its divisors is an integer number (18468).

2²²⁵⁵¹⁵ is an apocalyptic number.

225515 is a deficient number, since it is larger than the sum of its proper divisors (69973).

225515 is a wasteful number, since it uses less digits than its factorization.

225515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118.

The product of its digits is 500, while the sum is 20.

The square root of 225515 is about 474.8841964100. The cubic root of 225515 is about 60.8683895440.

The spelling of 225515 in words is "two hundred twenty-five thousand, five hundred fifteen".