225278233 has 4 divisors (see below), whose sum is σ = 226155060. Its totient is φ = 224401408.

The previous prime is 225278227. The next prime is 225278281. The reversal of 225278233 is 332872522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 107599129 + 117679104 = 10373^2 + 10848^2 .

It is a cyclic number.

It is not a de Polignac number, because 225278233 - 2¹³ = 225270041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225278213) 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, 438028 + ... + 438541.

It is an arithmetic number, because the mean of its divisors is an integer number (56538765).

Almost surely, 2^225278233 is an apocalyptic number.

It is an amenable number.

225278233 is a deficient number, since it is larger than the sum of its proper divisors (876827).

225278233 is an equidigital number, since it uses as much as digits as its factorization.

225278233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876826.

The product of its digits is 40320, while the sum is 34.

The square root of 225278233 is about 15009.2715679343. The cubic root of 225278233 is about 608.4708028519.

The spelling of 225278233 in words is "two hundred twenty-five million, two hundred seventy-eight thousand, two hundred thirty-three".