225321243 has 32 divisors (see below), whose sum is σ = 353009664. Its totient is φ = 125169312.

The previous prime is 225321223. The next prime is 225321253. The reversal of 225321243 is 342123522.

225321243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 225321243 - 2¹³ = 225313051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225321223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164146 + ... + 165512.

It is an arithmetic number, because the mean of its divisors is an integer number (11031552).

Almost surely, 2^225321243 is an apocalyptic number.

225321243 is a deficient number, since it is larger than the sum of its proper divisors (127688421).

225321243 is a wasteful number, since it uses less digits than its factorization.

225321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its digits is 2880, while the sum is 24.

The square root of 225321243 is about 15010.7042806126. The cubic root of 225321243 is about 608.5095233615.

Adding to 225321243 its reverse (342123522), we get a palindrome (567444765).

The spelling of 225321243 in words is "two hundred twenty-five million, three hundred twenty-one thousand, two hundred forty-three".