404105425 has 6 divisors (see below), whose sum is σ = 501090758. Its totient is φ = 323284320.

The previous prime is 404105417. The next prime is 404105441. The reversal of 404105425 is 524501404.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 92794689 + 311310736 = 9633^2 + 17644^2 .

It is not a de Polignac number, because 404105425 - 2³ = 404105417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 16164217 = 404105425 / (4 + 0 + 4 + 1 + 0 + 5 + 4 + 2 + 5).

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 404105425.

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 5 ways as a sum of consecutive naturals, for example, 8082084 + ... + 8082133.

Almost surely, 2^404105425 is an apocalyptic number.

It is an amenable number.

404105425 is a deficient number, since it is larger than the sum of its proper divisors (96985333).

404105425 is a wasteful number, since it uses less digits than its factorization.

404105425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16164227 (or 16164222 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 404105425 is about 20102.3736160683. The cubic root of 404105425 is about 739.3184771034.

Adding to 404105425 its reverse (524501404), we get a palindrome (928606829).

The spelling of 404105425 in words is "four hundred four million, one hundred five thousand, four hundred twenty-five".