20225404 has 12 divisors (see below), whose sum is σ = 35975128. Its totient is φ = 9946800.

The previous prime is 20225371. The next prime is 20225419. The reversal of 20225404 is 40452202.

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, 41202 + ... + 41689.

Almost surely, 2^20225404 is an apocalyptic number.

It is an amenable number.

20225404 is a deficient number, since it is larger than the sum of its proper divisors (15749724).

20225404 is a wasteful number, since it uses less digits than its factorization.

20225404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82956 (or 82954 counting only the distinct ones).

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

The square root of 20225404 is about 4497.2662807532. The cubic root of 20225404 is about 272.4576889109.

Adding to 20225404 its reverse (40452202), we get a palindrome (60677606).

The spelling of 20225404 in words is "twenty million, two hundred twenty-five thousand, four hundred four".