1253235422209 has 2 divisors, whose sum is σ = 1253235422210. Its totient is φ = 1253235422208.

The previous prime is 1253235422203. The next prime is 1253235422251. The reversal of 1253235422209 is 9022245323521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1021975421184 + 231260001025 = 1010928^2 + 480895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253235422209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253235422203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626617711104 + 626617711105.

It is an arithmetic number, because the mean of its divisors is an integer number (626617711105).

Almost surely, 2^{1253235422209} is an apocalyptic number.

It is an amenable number.

1253235422209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253235422209 is an equidigital number, since it uses as much as digits as its factorization.

1253235422209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 1253235422209 in words is "one trillion, two hundred fifty-three billion, two hundred thirty-five million, four hundred twenty-two thousand, two hundred nine".