20225331 has 12 divisors (see below), whose sum is σ = 33387952. Its totient is φ = 11557296.

The previous prime is 20225327. The next prime is 20225353. The reversal of 20225331 is 13352202.

It is not a de Polignac number, because 20225331 - 2² = 20225327 is a prime.

It is a super-2 number, since 2×20225331² = 818128028119122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20225311) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 160456 + ... + 160581.

Almost surely, 2^20225331 is an apocalyptic number.

20225331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20225331 is a deficient number, since it is larger than the sum of its proper divisors (13162621).

20225331 is a wasteful number, since it uses less digits than its factorization.

20225331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321050 (or 321047 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20225331 is about 4497.2581647044. The cubic root of 20225331 is about 272.4573611146.

Adding to 20225331 its reverse (13352202), we get a palindrome (33577533).

The spelling of 20225331 in words is "twenty million, two hundred twenty-five thousand, three hundred thirty-one".