243323225 has 12 divisors (see below), whose sum is σ = 301970256. Its totient is φ = 194497680.

The previous prime is 243323189. The next prime is 243323251. The reversal of 243323225 is 522323342.

It is not a de Polignac number, because 243323225 - 2¹⁴ = 243306841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243323194 and 243323203.

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, 33794 + ... + 40356.

It is an arithmetic number, because the mean of its divisors is an integer number (25164188).

Almost surely, 2^243323225 is an apocalyptic number.

243323225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243323225 is a deficient number, since it is larger than the sum of its proper divisors (58647031).

243323225 is a wasteful number, since it uses less digits than its factorization.

243323225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8056 (or 8051 counting only the distinct ones).

The product of its digits is 8640, while the sum is 26.

The square root of 243323225 is about 15598.8212695703. The cubic root of 243323225 is about 624.3017054394.

Adding to 243323225 its reverse (522323342), we get a palindrome (765646567).

The spelling of 243323225 in words is "two hundred forty-three million, three hundred twenty-three thousand, two hundred twenty-five".