243223325 has 6 divisors (see below), whose sum is σ = 301596954. Its totient is φ = 194578640.

The previous prime is 243223291. The next prime is 243223339. The reversal of 243223325 is 523322342.

It can be written as a sum of positive squares in 3 ways, for example, as 29888089 + 213335236 = 5467^2 + 14606^2 .

It is not a de Polignac number, because 243223325 - 2⁸ = 243223069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243223294 and 243223303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4864442 + ... + 4864491.

It is an arithmetic number, because the mean of its divisors is an integer number (50266159).

Almost surely, 2^243223325 is an apocalyptic number.

243223325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243223325 is a deficient number, since it is larger than the sum of its proper divisors (58373629).

243223325 is an equidigital number, since it uses as much as digits as its factorization.

243223325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9728943 (or 9728938 counting only the distinct ones).

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

The square root of 243223325 is about 15595.6187757973. The cubic root of 243223325 is about 624.2162549340.

Adding to 243223325 its reverse (523322342), we get a palindrome (766545667).

The spelling of 243223325 in words is "two hundred forty-three million, two hundred twenty-three thousand, three hundred twenty-five".