243723256025 has 6 divisors (see below), whose sum is σ = 302216837502. Its totient is φ = 194978604800.

The previous prime is 243723255967. The next prime is 243723256081. The reversal of 243723256025 is 520652327342.

243723256025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 71753801161 + 171969454864 = 267869^2 + 414692^2 .

It is not a de Polignac number, because 243723256025 - 2¹⁰ = 243723255001 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 (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4874465096 + ... + 4874465145.

It is an arithmetic number, because the mean of its divisors is an integer number (50369472917).

Almost surely, 2^243723256025 is an apocalyptic number.

243723256025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243723256025 is a deficient number, since it is larger than the sum of its proper divisors (58493581477).

243723256025 is an equidigital number, since it uses as much as digits as its factorization.

243723256025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748930251 (or 9748930246 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 41.

The spelling of 243723256025 in words is "two hundred forty-three billion, seven hundred twenty-three million, two hundred fifty-six thousand, twenty-five".