225242215 has 16 divisors (see below), whose sum is σ = 296103456. Its totient is φ = 163123200.

The previous prime is 225242167. The next prime is 225242239. The reversal of 225242215 is 512242522.

It is not a de Polignac number, because 225242215 - 2⁹ = 225241703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225242215.

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, 4759 + ... + 21751.

It is an arithmetic number, because the mean of its divisors is an integer number (18506466).

Almost surely, 2^225242215 is an apocalyptic number.

225242215 is a deficient number, since it is larger than the sum of its proper divisors (70861241).

225242215 is a wasteful number, since it uses less digits than its factorization.

225242215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17250.

The product of its digits is 3200, while the sum is 25.

The square root of 225242215 is about 15008.0716616093. The cubic root of 225242215 is about 608.4383732215.

Adding to 225242215 its reverse (512242522), we get a palindrome (737484737).

The spelling of 225242215 in words is "two hundred twenty-five million, two hundred forty-two thousand, two hundred fifteen".