243555325 has 12 divisors (see below), whose sum is σ = 325240468. Its totient is φ = 179856000.

The previous prime is 243555307. The next prime is 243555343. The reversal of 243555325 is 523555342.

It is an interprime number because it is at equal distance from previous prime (243555307) and next prime (243555343).

It can be written as a sum of positive squares in 6 ways, for example, as 850084 + 242705241 = 922^2 + 15579^2 .

It is not a de Polignac number, because 243555325 - 2⁹ = 243554813 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374376 + ... + 375025.

Almost surely, 2^243555325 is an apocalyptic number.

243555325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243555325 is a deficient number, since it is larger than the sum of its proper divisors (81685143).

243555325 is a wasteful number, since it uses less digits than its factorization.

243555325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749424 (or 749419 counting only the distinct ones).

The product of its digits is 90000, while the sum is 34.

The square root of 243555325 is about 15606.2591609905. The cubic root of 243555325 is about 624.5001443375.

The spelling of 243555325 in words is "two hundred forty-three million, five hundred fifty-five thousand, three hundred twenty-five".