22020225 has 12 divisors (see below), whose sum is σ = 36406896. Its totient is φ = 11744080.

The previous prime is 22020211. The next prime is 22020227. The reversal of 22020225 is 52202022.

It is not a de Polignac number, because 22020225 - 2⁴ = 22020209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (22020227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146727 + ... + 146876.

It is an arithmetic number, because the mean of its divisors is an integer number (3033908).

Almost surely, 2^22020225 is an apocalyptic number.

22020225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22020225 is a deficient number, since it is larger than the sum of its proper divisors (14386671).

22020225 is a wasteful number, since it uses less digits than its factorization.

22020225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293616 (or 293611 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22020225 is about 4692.5712567845. The cubic root of 22020225 is about 280.2897722898.

Adding to 22020225 its reverse (52202022), we get a palindrome (74222247).

The spelling of 22020225 in words is "twenty-two million, twenty thousand, two hundred twenty-five".