404242330025 has 12 divisors (see below), whose sum is σ = 513486356124. Its totient is φ = 315506208000.

The previous prime is 404242330021. The next prime is 404242330049. The reversal of 404242330025 is 520033242404.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 44491886761 + 359750443264 = 210931^2 + 599792^2 .

It is not a de Polignac number, because 404242330025 - 2² = 404242330021 is a prime.

It is a super-2 number, since 2×404242330025² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404242330025.

It is not an unprimeable number, because it can be changed into a prime (404242330021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197190356 + ... + 197192405.

It is an arithmetic number, because the mean of its divisors is an integer number (42790529677).

Almost surely, 2^404242330025 is an apocalyptic number.

It is an amenable number.

404242330025 is a deficient number, since it is larger than the sum of its proper divisors (109244026099).

404242330025 is a wasteful number, since it uses less digits than its factorization.

404242330025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394382812 (or 394382807 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 404242330025 its reverse (520033242404), we get a palindrome (924275572429).

The spelling of 404242330025 in words is "four hundred four billion, two hundred forty-two million, three hundred thirty thousand, twenty-five".