225306243 has 12 divisors (see below), whose sum is σ = 325581360. Its totient is φ = 150140016.

The previous prime is 225306241. The next prime is 225306269. The reversal of 225306243 is 342603522.

225306243 is a `hidden beast` number, since 2 + 2 + 5 + 30 + 624 + 3 = 666.

It is not a de Polignac number, because 225306243 - 2¹ = 225306241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225306241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27553 + ... + 34781.

It is an arithmetic number, because the mean of its divisors is an integer number (27131780).

Almost surely, 2^225306243 is an apocalyptic number.

225306243 is a deficient number, since it is larger than the sum of its proper divisors (100275117).

225306243 is a wasteful number, since it uses less digits than its factorization.

225306243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10698 (or 10695 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 225306243 is about 15010.2046288517. The cubic root of 225306243 is about 608.4960199070.

Adding to 225306243 its reverse (342603522), we get a palindrome (567909765).

The spelling of 225306243 in words is "two hundred twenty-five million, three hundred six thousand, two hundred forty-three".