225633451 has 4 divisors (see below), whose sum is σ = 225770472. Its totient is φ = 225496432.

The previous prime is 225633413. The next prime is 225633467. The reversal of 225633451 is 154336522.

It is a happy number.

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 225633451 - 2²³ = 217244843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225633491) 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, 66010 + ... + 69343.

It is an arithmetic number, because the mean of its divisors is an integer number (56442618).

Almost surely, 2^225633451 is an apocalyptic number.

225633451 is a deficient number, since it is larger than the sum of its proper divisors (137021).

225633451 is a wasteful number, since it uses less digits than its factorization.

225633451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137020.

The product of its digits is 21600, while the sum is 31.

The square root of 225633451 is about 15021.1001927289. The cubic root of 225633451 is about 608.7904465141.

Adding to 225633451 its reverse (154336522), we get a palindrome (379969973).

The spelling of 225633451 in words is "two hundred twenty-five million, six hundred thirty-three thousand, four hundred fifty-one".