404432225 has 6 divisors (see below), whose sum is σ = 501495990. Its totient is φ = 323545760.

The previous prime is 404432219. The next prime is 404432263. The reversal of 404432225 is 522234404.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5870929 + 398561296 = 2423^2 + 19964^2 .

It is a de Polignac number, because none of the positive numbers 2^k-404432225 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404432194 and 404432203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8088620 + ... + 8088669.

It is an arithmetic number, because the mean of its divisors is an integer number (83582665).

Almost surely, 2^404432225 is an apocalyptic number.

It is an amenable number.

404432225 is a deficient number, since it is larger than the sum of its proper divisors (97063765).

404432225 is a wasteful number, since it uses less digits than its factorization.

404432225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16177299 (or 16177294 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 404432225 is about 20110.5003667238. The cubic root of 404432225 is about 739.5177189867.

Adding to 404432225 its reverse (522234404), we get a palindrome (926666629).

The spelling of 404432225 in words is "four hundred four million, four hundred thirty-two thousand, two hundred twenty-five".