20025904 has 20 divisors (see below), whose sum is σ = 38870280. Its totient is φ = 9994880.

The previous prime is 20025899. The next prime is 20025911. The reversal of 20025904 is 40952002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14892 + ... + 16180.

It is an arithmetic number, because the mean of its divisors is an integer number (1943514).

Almost surely, 2^20025904 is an apocalyptic number.

It is an amenable number.

20025904 is a deficient number, since it is larger than the sum of its proper divisors (18844376).

20025904 is a wasteful number, since it uses less digits than its factorization.

20025904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20025904 is about 4475.0311730758. The cubic root of 20025904 is about 271.5589015574.

Adding to 20025904 its reverse (40952002), we get a palindrome (60977906).

The spelling of 20025904 in words is "twenty million, twenty-five thousand, nine hundred four".