1225325043209 has 2 divisors, whose sum is σ = 1225325043210. Its totient is φ = 1225325043208.

The previous prime is 1225325043127. The next prime is 1225325043281. The reversal of 1225325043209 is 9023405235221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007303286025 + 218021757184 = 1003645^2 + 466928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225325043209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1225325043289) 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, 612662521604 + 612662521605.

It is an arithmetic number, because the mean of its divisors is an integer number (612662521605).

Almost surely, 2^{1225325043209} is an apocalyptic number.

It is an amenable number.

1225325043209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225325043209 is an equidigital number, since it uses as much as digits as its factorization.

1225325043209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 1225325043209 in words is "one trillion, two hundred twenty-five billion, three hundred twenty-five million, forty-three thousand, two hundred nine".