243001025 has 12 divisors (see below), whose sum is σ = 307008252. Its totient is φ = 190731840.

The previous prime is 243001019. The next prime is 243001097. The reversal of 243001025 is 520100342.

It can be written as a sum of positive squares in 6 ways, for example, as 12902464 + 230098561 = 3592^2 + 15169^2 .

It is not a de Polignac number, because 243001025 - 2¹⁴ = 242984641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243000994 and 243001012.

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, 90374 + ... + 93023.

It is an arithmetic number, because the mean of its divisors is an integer number (25584021).

Almost surely, 2^243001025 is an apocalyptic number.

243001025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243001025 is a deficient number, since it is larger than the sum of its proper divisors (64007227).

243001025 is a wasteful number, since it uses less digits than its factorization.

243001025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183460 (or 183455 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 243001025 is about 15588.4901449756. The cubic root of 243001025 is about 624.0260243160.

Adding to 243001025 its reverse (520100342), we get a palindrome (763101367).

The spelling of 243001025 in words is "two hundred forty-three million, one thousand, twenty-five".