225302133 has 16 divisors (see below), whose sum is σ = 361387520. Its totient is φ = 121967856.

The previous prime is 225302123. The next prime is 225302159. The reversal of 225302133 is 331203522.

It is not a de Polignac number, because 225302133 - 2¹² = 225298037 is a prime.

It is a super-2 number, since 2×225302133² = 101522102268699378, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225302113) 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, 281935 + ... + 282732.

It is an arithmetic number, because the mean of its divisors is an integer number (22586720).

Almost surely, 2^225302133 is an apocalyptic number.

It is an amenable number.

225302133 is a deficient number, since it is larger than the sum of its proper divisors (136085387).

225302133 is a wasteful number, since it uses less digits than its factorization.

225302133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564696.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 225302133 is about 15010.0677213662. The cubic root of 225302133 is about 608.4923198559.

Adding to 225302133 its reverse (331203522), we get a palindrome (556505655).

The spelling of 225302133 in words is "two hundred twenty-five million, three hundred two thousand, one hundred thirty-three".