225431443 has 4 divisors (see below), whose sum is σ = 225461920. Its totient is φ = 225400968.

The previous prime is 225431431. The next prime is 225431467. The reversal of 225431443 is 344134522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225431443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225438443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3718 + ... + 21556.

It is an arithmetic number, because the mean of its divisors is an integer number (56365480).

Almost surely, 2^225431443 is an apocalyptic number.

225431443 is a deficient number, since it is larger than the sum of its proper divisors (30477).

225431443 is a wasteful number, since it uses less digits than its factorization.

225431443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30476.

The product of its digits is 11520, while the sum is 28.

The square root of 225431443 is about 15014.3745457478. The cubic root of 225431443 is about 608.6087103701.

Adding to 225431443 its reverse (344134522), we get a palindrome (569565965).

The spelling of 225431443 in words is "two hundred twenty-five million, four hundred thirty-one thousand, four hundred forty-three".