243706025 has 6 divisors (see below), whose sum is σ = 302195502. Its totient is φ = 194964800.

The previous prime is 243706019. The next prime is 243706037. The reversal of 243706025 is 520607342.

It can be written as a sum of positive squares in 3 ways, for example, as 2704 + 243703321 = 52^2 + 15611^2 .

It is not a de Polignac number, because 243706025 - 2¹² = 243701929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4874096 + ... + 4874145.

It is an arithmetic number, because the mean of its divisors is an integer number (50365917).

Almost surely, 2^243706025 is an apocalyptic number.

243706025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243706025 is a deficient number, since it is larger than the sum of its proper divisors (58489477).

243706025 is an equidigital number, since it uses as much as digits as its factorization.

243706025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748251 (or 9748246 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 243706025 is about 15611.0866053584. The cubic root of 243706025 is about 624.6289210576.

The spelling of 243706025 in words is "two hundred forty-three million, seven hundred six thousand, twenty-five".