225221695 has 16 divisors (see below), whose sum is σ = 288100800. Its totient is φ = 168431104.

The previous prime is 225221683. The next prime is 225221707. The reversal of 225221695 is 596122522.

It is an interprime number because it is at equal distance from previous prime (225221683) and next prime (225221707).

It is not a de Polignac number, because 225221695 - 2⁷ = 225221567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225221695.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3774 + ... + 21556.

It is an arithmetic number, because the mean of its divisors is an integer number (18006300).

Almost surely, 2^225221695 is an apocalyptic number.

225221695 is a deficient number, since it is larger than the sum of its proper divisors (62879105).

225221695 is a wasteful number, since it uses less digits than its factorization.

225221695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17954.

The product of its digits is 21600, while the sum is 34.

The square root of 225221695 is about 15007.3880139083. The cubic root of 225221695 is about 608.4198960242.

The spelling of 225221695 in words is "two hundred twenty-five million, two hundred twenty-one thousand, six hundred ninety-five".