4245205409 has 2 divisors, whose sum is σ = 4245205410. Its totient is φ = 4245205408.

The previous prime is 4245205387. The next prime is 4245205411. The reversal of 4245205409 is 9045025424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4233454225 + 11751184 = 65065^2 + 3428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4245205409 is a prime.

It is a super-3 number, since 3×4245205409³ (a number of 30 digits) contains 333 as substring.

Together with 4245205411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4245205429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122602704 + 2122602705.

It is an arithmetic number, because the mean of its divisors is an integer number (2122602705).

Almost surely, 2^4245205409 is an apocalyptic number.

It is an amenable number.

4245205409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4245205409 is an equidigital number, since it uses as much as digits as its factorization.

4245205409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 4245205409 is about 65155.2408406262. The cubic root of 4245205409 is about 1619.1965493355.

The spelling of 4245205409 in words is "four billion, two hundred forty-five million, two hundred five thousand, four hundred nine".