245025403451009 has 2 divisors, whose sum is σ = 245025403451010. Its totient is φ = 245025403451008.

The previous prime is 245025403450957. The next prime is 245025403451123. The reversal of 245025403451009 is 900154304520542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240710477433409 + 4314926017600 = 15514847^2 + 2077240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245025403451009 is a prime.

It is not a weakly prime, because it can be changed into another prime (245025403451509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122512701725504 + 122512701725505.

It is an arithmetic number, because the mean of its divisors is an integer number (122512701725505).

Almost surely, 2^{245025403451009} is an apocalyptic number.

It is an amenable number.

245025403451009 is a deficient number, since it is larger than the sum of its proper divisors (1).

245025403451009 is an equidigital number, since it uses as much as digits as its factorization.

245025403451009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 245025403451009 in words is "two hundred forty-five trillion, twenty-five billion, four hundred three million, four hundred fifty-one thousand, nine".