225930243 has 16 divisors (see below), whose sum is σ = 375572736. Its totient is φ = 117366240.

The previous prime is 225930193. The next prime is 225930281. The reversal of 225930243 is 342039522.

It is not a de Polignac number, because 225930243 - 2⁹ = 225929731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225930243.

It is not an unprimeable number, because it can be changed into a prime (225930143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488796 + ... + 489257.

It is an arithmetic number, because the mean of its divisors is an integer number (23473296).

Almost surely, 2^225930243 is an apocalyptic number.

225930243 is a deficient number, since it is larger than the sum of its proper divisors (149642493).

225930243 is a wasteful number, since it uses less digits than its factorization.

225930243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978074.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 225930243 is about 15030.9761160079. The cubic root of 225930243 is about 609.0572582670.

Adding to 225930243 its reverse (342039522), we get a palindrome (567969765).

The spelling of 225930243 in words is "two hundred twenty-five million, nine hundred thirty thousand, two hundred forty-three".