225404 has 12 divisors (see below), whose sum is σ = 405384. Its totient is φ = 109584.

The previous prime is 225383. The next prime is 225427. The reversal of 225404 is 404522.

225404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225404.

It is an unprimeable number.

225404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614 + ... + 909.

It is an arithmetic number, because the mean of its divisors is an integer number (33782).

2²²⁵⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

225404 is a deficient number, since it is larger than the sum of its proper divisors (179980).

225404 is a wasteful number, since it uses less digits than its factorization.

225404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 225404 is about 474.7673114274. The cubic root of 225404 is about 60.8584012948.

Adding to 225404 its reverse (404522), we get a palindrome (629926).

The spelling of 225404 in words is "two hundred twenty-five thousand, four hundred four".