225444403 has 4 divisors (see below), whose sum is σ = 225546808. Its totient is φ = 225342000.

The previous prime is 225444397. The next prime is 225444407. The reversal of 225444403 is 304444522.

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 225444403 - 2⁵ = 225444371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225444407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47826 + ... + 52327.

It is an arithmetic number, because the mean of its divisors is an integer number (56386702).

Almost surely, 2^225444403 is an apocalyptic number.

225444403 is a deficient number, since it is larger than the sum of its proper divisors (102405).

225444403 is a wasteful number, since it uses less digits than its factorization.

225444403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102404.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 225444403 is about 15014.8061259545. The cubic root of 225444403 is about 608.6203730700.

Adding to 225444403 its reverse (304444522), we get a palindrome (529888925).

The spelling of 225444403 in words is "two hundred twenty-five million, four hundred forty-four thousand, four hundred three".