225203203 has 4 divisors (see below), whose sum is σ = 226847160. Its totient is φ = 223559248.

The previous prime is 225203161. The next prime is 225203239. The reversal of 225203203 is 302302522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225203203 - 2¹⁷ = 225072131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225203243) 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, 821773 + ... + 822046.

It is an arithmetic number, because the mean of its divisors is an integer number (56711790).

Almost surely, 2^225203203 is an apocalyptic number.

225203203 is a deficient number, since it is larger than the sum of its proper divisors (1643957).

225203203 is a wasteful number, since it uses less digits than its factorization.

225203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643956.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 225203203 is about 15006.7719047102. The cubic root of 225203203 is about 608.4032439744.

Adding to 225203203 its reverse (302302522), we get a palindrome (527505725).

The spelling of 225203203 in words is "two hundred twenty-five million, two hundred three thousand, two hundred three".