404865225 has 36 divisors (see below), whose sum is σ = 727282816. Its totient is φ = 215295840.

The previous prime is 404865199. The next prime is 404865229. The reversal of 404865225 is 522568404.

It is a happy number.

It is not a de Polignac number, because 404865225 - 2¹² = 404861129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404865225.

It is not an unprimeable number, because it can be changed into a prime (404865229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80124 + ... + 85026.

Almost surely, 2^404865225 is an apocalyptic number.

404865225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404865225 is a deficient number, since it is larger than the sum of its proper divisors (322417591).

404865225 is a wasteful number, since it uses less digits than its factorization.

404865225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 404865225 is about 20121.2630070779. The cubic root of 404865225 is about 739.7815431364.

The spelling of 404865225 in words is "four hundred four million, eight hundred sixty-five thousand, two hundred twenty-five".