225244213 has 4 divisors (see below), whose sum is σ = 225348480. Its totient is φ = 225139948.

The previous prime is 225244193. The next prime is 225244219. The reversal of 225244213 is 312442522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225244213 - 2⁵ = 225244181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225244219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48823 + ... + 53236.

It is an arithmetic number, because the mean of its divisors is an integer number (56337120).

Almost surely, 2^225244213 is an apocalyptic number.

It is an amenable number.

225244213 is a deficient number, since it is larger than the sum of its proper divisors (104267).

225244213 is a wasteful number, since it uses less digits than its factorization.

225244213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104266.

The product of its digits is 3840, while the sum is 25.

The square root of 225244213 is about 15008.1382256428. The cubic root of 225244213 is about 608.4401722571.

Adding to 225244213 its reverse (312442522), we get a palindrome (537686735).

The spelling of 225244213 in words is "two hundred twenty-five million, two hundred forty-four thousand, two hundred thirteen".