225213230 has 16 divisors (see below), whose sum is σ = 442237104. Its totient is φ = 81895680.

The previous prime is 225213227. The next prime is 225213239. The reversal of 225213230 is 32312522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225213239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1023587 + ... + 1023806.

It is an arithmetic number, because the mean of its divisors is an integer number (27639819).

Almost surely, 2^225213230 is an apocalyptic number.

225213230 is a deficient number, since it is larger than the sum of its proper divisors (217023874).

225213230 is a wasteful number, since it uses less digits than its factorization.

225213230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047411.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 225213230 is about 15007.1059834999. The cubic root of 225213230 is about 608.4122734031.

Adding to 225213230 its reverse (32312522), we get a palindrome (257525752).

The spelling of 225213230 in words is "two hundred twenty-five million, two hundred thirteen thousand, two hundred thirty".