1225841068409 has 2 divisors, whose sum is σ = 1225841068410. Its totient is φ = 1225841068408.

The previous prime is 1225841068369. The next prime is 1225841068423. The reversal of 1225841068409 is 9048601485221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 775230942784 + 450610125625 = 880472^2 + 671275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225841068409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225841068009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612920534204 + 612920534205.

It is an arithmetic number, because the mean of its divisors is an integer number (612920534205).

Almost surely, 2^{1225841068409} is an apocalyptic number.

It is an amenable number.

1225841068409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225841068409 is an equidigital number, since it uses as much as digits as its factorization.

1225841068409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 1225841068409 in words is "one trillion, two hundred twenty-five billion, eight hundred forty-one million, sixty-eight thousand, four hundred nine".