2220320225 has 12 divisors (see below), whose sum is σ = 2753820396. Its totient is φ = 1775854080.

The previous prime is 2220320209. The next prime is 2220320231. The reversal of 2220320225 is 5220230222.

It can be written as a sum of positive squares in 6 ways, for example, as 12166144 + 2208154081 = 3488^2 + 46991^2 .

It is not a de Polignac number, because 2220320225 - 2⁴ = 2220320209 is a prime.

It is a super-3 number, since 3×2220320225³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220320197 and 2220320206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157049 + ... + 170601.

It is an arithmetic number, because the mean of its divisors is an integer number (229485033).

Almost surely, 2^2220320225 is an apocalyptic number.

2220320225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2220320225 is a deficient number, since it is larger than the sum of its proper divisors (533500171).

2220320225 is a wasteful number, since it uses less digits than its factorization.

2220320225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20116 (or 20111 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 2220320225 is about 47120.2740335835. The cubic root of 2220320225 is about 1304.5834707521.

Adding to 2220320225 its reverse (5220230222), we get a palindrome (7440550447).

The spelling of 2220320225 in words is "two billion, two hundred twenty million, three hundred twenty thousand, two hundred twenty-five".