225403 has 4 divisors (see below), whose sum is σ = 238680. Its totient is φ = 212128.

The previous prime is 225383. The next prime is 225427. The reversal of 225403 is 304522.

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 225403 - 2⁵ = 225371 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (225493) 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, 6613 + ... + 6646.

It is an arithmetic number, because the mean of its divisors is an integer number (59670).

2²²⁵⁴⁰³ is an apocalyptic number.

225403 is a deficient number, since it is larger than the sum of its proper divisors (13277).

225403 is a wasteful number, since it uses less digits than its factorization.

225403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13276.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 225403 is about 474.7662582787. The cubic root of 225403 is about 60.8583112957.

Adding to 225403 its reverse (304522), we get a palindrome (529925).

The spelling of 225403 in words is "two hundred twenty-five thousand, four hundred three".