20025804 has 24 divisors (see below), whose sum is σ = 46992960. Its totient is φ = 6637264.

The previous prime is 20025787. The next prime is 20025823. The reversal of 20025804 is 40852002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2514 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^20025804 is an apocalyptic number.

It is an amenable number.

20025804 is an abundant number, since it is smaller than the sum of its proper divisors (26967156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20025804 is a wasteful number, since it uses less digits than its factorization.

20025804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509 (or 9507 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 20025804 is about 4475.0199999553. The cubic root of 20025804 is about 271.5584495439.

Adding to 20025804 its reverse (40852002), we get a palindrome (60877806).

The spelling of 20025804 in words is "twenty million, twenty-five thousand, eight hundred four".