243718025 has 6 divisors (see below), whose sum is σ = 302210382. Its totient is φ = 194974400.

The previous prime is 243718003. The next prime is 243718037. The reversal of 243718025 is 520817342.

It can be written as a sum of positive squares in 3 ways, for example, as 12313081 + 231404944 = 3509^2 + 15212^2 .

It is not a de Polignac number, because 243718025 - 2⁶ = 243717961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243717982 and 243718000.

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, 4874336 + ... + 4874385.

It is an arithmetic number, because the mean of its divisors is an integer number (50368397).

Almost surely, 2^243718025 is an apocalyptic number.

243718025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243718025 is a deficient number, since it is larger than the sum of its proper divisors (58492357).

243718025 is an equidigital number, since it uses as much as digits as its factorization.

243718025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748731 (or 9748726 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 243718025 is about 15611.4709428676. The cubic root of 243718025 is about 624.6391730597.

The spelling of 243718025 in words is "two hundred forty-three million, seven hundred eighteen thousand, twenty-five".