203320225 has 12 divisors (see below), whose sum is σ = 252393196. Its totient is φ = 162478080.

The previous prime is 203320213. The next prime is 203320231. The reversal of 203320225 is 522023302.

203320225 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 6 ways, for example, as 4397409 + 198922816 = 2097^2 + 14104^2 .

It is not a de Polignac number, because 203320225 - 2¹¹ = 203318177 is a prime.

It is a super-2 number, since 2×203320225² = 82678227788101250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 21889 + ... + 29761.

Almost surely, 2^203320225 is an apocalyptic number.

203320225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203320225 is a deficient number, since it is larger than the sum of its proper divisors (49072971).

203320225 is a wasteful number, since it uses less digits than its factorization.

203320225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8916 (or 8911 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 203320225 is about 14259.0401149587. The cubic root of 203320225 is about 588.0219354505.

Adding to 203320225 its reverse (522023302), we get a palindrome (725343527).

The spelling of 203320225 in words is "two hundred three million, three hundred twenty thousand, two hundred twenty-five".