225406 has 8 divisors (see below), whose sum is σ = 346104. Its totient is φ = 110040.

The previous prime is 225383. The next prime is 225427. The reversal of 225406 is 604522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 1225 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (43263).

2²²⁵⁴⁰⁶ is an apocalyptic number.

225406 is a deficient number, since it is larger than the sum of its proper divisors (120698).

225406 is a wasteful number, since it uses less digits than its factorization.

225406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 225406 is about 474.7694177177. The cubic root of 225406 is about 60.8585812922.

Adding to 225406 its reverse (604522), we get a palindrome (829928).

The spelling of 225406 in words is "two hundred twenty-five thousand, four hundred six".