404430425 has 48 divisors (see below), whose sum is σ = 616210560. Its totient is φ = 256988160.

The previous prime is 404430421. The next prime is 404430431. The reversal of 404430425 is 524034404.

It is not a de Polignac number, because 404430425 - 2² = 404430421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404430394 and 404430403.

It is not an unprimeable number, because it can be changed into a prime (404430421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 198311 + ... + 200339.

It is an arithmetic number, because the mean of its divisors is an integer number (12837720).

Almost surely, 2^404430425 is an apocalyptic number.

It is an amenable number.

404430425 is a deficient number, since it is larger than the sum of its proper divisors (211780135).

404430425 is a wasteful number, since it uses less digits than its factorization.

404430425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130 (or 2125 counting only the distinct ones).

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

The square root of 404430425 is about 20110.4556139338. The cubic root of 404430425 is about 739.5166218652.

Adding to 404430425 its reverse (524034404), we get a palindrome (928464829).

The spelling of 404430425 in words is "four hundred four million, four hundred thirty thousand, four hundred twenty-five".