404500025 has 24 divisors (see below), whose sum is σ = 529341120. Its totient is φ = 305778240.

The previous prime is 404500013. The next prime is 404500043. The reversal of 404500025 is 520005404.

It is a happy number.

It is not a de Polignac number, because 404500025 - 2⁴ = 404500009 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238079 + ... + 239771.

It is an arithmetic number, because the mean of its divisors is an integer number (22055880).

Almost surely, 2^404500025 is an apocalyptic number.

It is an amenable number.

404500025 is a deficient number, since it is larger than the sum of its proper divisors (124841095).

404500025 is a wasteful number, since it uses less digits than its factorization.

404500025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2220 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 404500025 is about 20112.1859826325. The cubic root of 404500025 is about 739.5590415262.

Adding to 404500025 its reverse (520005404), we get a palindrome (924505429).

The spelling of 404500025 in words is "four hundred four million, five hundred thousand, twenty-five".