20425204 has 12 divisors (see below), whose sum is σ = 35964544. Its totient is φ = 10149624.

The previous prime is 20425189. The next prime is 20425217. The reversal of 20425204 is 40252402.

It is a congruent 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, 15012 + ... + 16315.

Almost surely, 2^20425204 is an apocalyptic number.

It is an amenable number.

20425204 is a deficient number, since it is larger than the sum of its proper divisors (15539340).

20425204 is a wasteful number, since it uses less digits than its factorization.

20425204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31494 (or 31492 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20425204 is about 4519.4251846889. The cubic root of 20425204 is about 273.3519235158.

Adding to 20425204 its reverse (40252402), we get a palindrome (60677606).

The spelling of 20425204 in words is "twenty million, four hundred twenty-five thousand, two hundred four".