404221422025 has 24 divisors (see below), whose sum is σ = 521383426200. Its totient is φ = 310501094400.

The previous prime is 404221421921. The next prime is 404221422043. The reversal of 404221422025 is 520224122404.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 120342385216 + 283879036809 = 346904^2 + 532803^2 .

It is not a de Polignac number, because 404221422025 - 2⁷ = 404221421897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404221421984 and 404221422002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1408960 + ... + 1671409.

It is an arithmetic number, because the mean of its divisors is an integer number (21724309425).

Almost surely, 2^404221422025 is an apocalyptic number.

It is an amenable number.

404221422025 is a deficient number, since it is larger than the sum of its proper divisors (117162004175).

404221422025 is a wasteful number, since it uses less digits than its factorization.

404221422025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080589 (or 3080584 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 404221422025 its reverse (520224122404), we get a palindrome (924445544429).

The spelling of 404221422025 in words is "four hundred four billion, two hundred twenty-one million, four hundred twenty-two thousand, twenty-five".