243225305 has 8 divisors (see below), whose sum is σ = 292229952. Its totient is φ = 194340528.

The previous prime is 243225263. The next prime is 243225337. The reversal of 243225305 is 503522342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243225305 - 2⁸ = 243225049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25439 + ... + 33668.

It is an arithmetic number, because the mean of its divisors is an integer number (36528744).

Almost surely, 2^243225305 is an apocalyptic number.

It is an amenable number.

243225305 is a deficient number, since it is larger than the sum of its proper divisors (49004647).

243225305 is an equidigital number, since it uses as much as digits as its factorization.

243225305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59935.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 243225305 is about 15595.6822550346. The cubic root of 243225305 is about 624.2179487749.

Adding to 243225305 its reverse (503522342), we get a palindrome (746747647).

The spelling of 243225305 in words is "two hundred forty-three million, two hundred twenty-five thousand, three hundred five".