225243345 has 16 divisors (see below), whose sum is σ = 360961920. Its totient is φ = 119938944.

The previous prime is 225243329. The next prime is 225243349. The reversal of 225243345 is 543342522.

It is not a de Polignac number, because 225243345 - 2⁴ = 225243329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225243349) 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, 1900 + ... + 21309.

It is an arithmetic number, because the mean of its divisors is an integer number (22560120).

Almost surely, 2^225243345 is an apocalyptic number.

It is an amenable number.

225243345 is a deficient number, since it is larger than the sum of its proper divisors (135718575).

225243345 is a wasteful number, since it uses less digits than its factorization.

225243345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23864.

The product of its digits is 28800, while the sum is 30.

The square root of 225243345 is about 15008.1093079708. The cubic root of 225243345 is about 608.4393906954.

Adding to 225243345 its reverse (543342522), we get a palindrome (768585867).

The spelling of 225243345 in words is "two hundred twenty-five million, two hundred forty-three thousand, three hundred forty-five".