404225 has 24 divisors (see below), whose sum is σ = 565440. Its totient is φ = 285120.

The previous prime is 404221. The next prime is 404249. The reversal of 404225 is 522404.

It is not a de Polignac number, because 404225 - 2² = 404221 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (404221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10907 + ... + 10943.

It is an arithmetic number, because the mean of its divisors is an integer number (23560).

2⁴⁰⁴²²⁵ is an apocalyptic number.

It is an amenable number.

404225 is a deficient number, since it is larger than the sum of its proper divisors (161215).

404225 is a wasteful number, since it uses less digits than its factorization.

404225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 84 counting only the distinct ones).

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

The square root of 404225 is about 635.7869139893. The cubic root of 404225 is about 73.9391391483.

Adding to 404225 its reverse (522404), we get a palindrome (926629).

The spelling of 404225 in words is "four hundred four thousand, two hundred twenty-five".