243225029 has 2 divisors, whose sum is σ = 243225030. Its totient is φ = 243225028.

The previous prime is 243225019. The next prime is 243225043. The reversal of 243225029 is 920522342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168402529 + 74822500 = 12977^2 + 8650^2 .

It is a cyclic number.

It is not a de Polignac number, because 243225029 - 2¹² = 243220933 is a prime.

It is a Chen prime.

It is equal to p_13328561 and since 243225029 and 13328561 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 243224992 and 243225010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243225019) by changing a digit.

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 as a sum of consecutive naturals, namely, 121612514 + 121612515.

It is an arithmetic number, because the mean of its divisors is an integer number (121612515).

Almost surely, 2^243225029 is an apocalyptic number.

It is an amenable number.

243225029 is a deficient number, since it is larger than the sum of its proper divisors (1).

243225029 is an equidigital number, since it uses as much as digits as its factorization.

243225029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 243225029 is about 15595.6734064291. The cubic root of 243225029 is about 624.2177126643.

The spelling of 243225029 in words is "two hundred forty-three million, two hundred twenty-five thousand, twenty-nine".