1225222225309 has 2 divisors, whose sum is σ = 1225222225310. Its totient is φ = 1225222225308.

The previous prime is 1225222225193. The next prime is 1225222225327. The reversal of 1225222225309 is 9035222225221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1209883402809 + 15338822500 = 1099947^2 + 123850^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225222225309 - 2⁷ = 1225222225181 is a prime.

It is a super-2 number, since 2×1225222225309² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225222225109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612611112654 + 612611112655.

It is an arithmetic number, because the mean of its divisors is an integer number (612611112655).

Almost surely, 2^{1225222225309} is an apocalyptic number.

It is an amenable number.

1225222225309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225222225309 is an equidigital number, since it uses as much as digits as its factorization.

1225222225309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 1225222225309 in words is "one trillion, two hundred twenty-five billion, two hundred twenty-two million, two hundred twenty-five thousand, three hundred nine".