1345242025249 has 2 divisors, whose sum is σ = 1345242025250. Its totient is φ = 1345242025248.

The previous prime is 1345242025241. The next prime is 1345242025291. The reversal of 1345242025249 is 9425202425431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1292189195025 + 53052830224 = 1136745^2 + 230332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345242025249 - 2³ = 1345242025241 is a prime.

It is a super-2 number, since 2×1345242025249² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1345242025241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672621012624 + 672621012625.

It is an arithmetic number, because the mean of its divisors is an integer number (672621012625).

Almost surely, 2^{1345242025249} is an apocalyptic number.

It is an amenable number.

1345242025249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345242025249 is an equidigital number, since it uses as much as digits as its factorization.

1345242025249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 1345242025249 in words is "one trillion, three hundred forty-five billion, two hundred forty-two million, twenty-five thousand, two hundred forty-nine".