220243325 has 6 divisors (see below), whose sum is σ = 273101754. Its totient is φ = 176194640.

The previous prime is 220243321. The next prime is 220243333. The reversal of 220243325 is 523342022.

220243325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 38613796 + 181629529 = 6214^2 + 13477^2 .

It is not a de Polignac number, because 220243325 - 2² = 220243321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220243325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220243321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4404842 + ... + 4404891.

It is an arithmetic number, because the mean of its divisors is an integer number (45516959).

Almost surely, 2^220243325 is an apocalyptic number.

220243325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220243325 is a deficient number, since it is larger than the sum of its proper divisors (52858429).

220243325 is an equidigital number, since it uses as much as digits as its factorization.

220243325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8809743 (or 8809738 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 220243325 is about 14840.5971914879. The cubic root of 220243325 is about 603.9035533399.

Adding to 220243325 its reverse (523342022), we get a palindrome (743585347).

The spelling of 220243325 in words is "two hundred twenty million, two hundred forty-three thousand, three hundred twenty-five".