195447225569 has 2 divisors, whose sum is σ = 195447225570. Its totient is φ = 195447225568.

The previous prime is 195447225563. The next prime is 195447225599. The reversal of 195447225569 is 965522744591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160576518400 + 34870707169 = 400720^2 + 186737^2 .

It is a cyclic number.

It is not a de Polignac number, because 195447225569 - 2¹⁶ = 195447160033 is a prime.

It is a super-2 number, since 2×195447225569² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (195447225563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97723612784 + 97723612785.

It is an arithmetic number, because the mean of its divisors is an integer number (97723612785).

Almost surely, 2^195447225569 is an apocalyptic number.

It is an amenable number.

195447225569 is a deficient number, since it is larger than the sum of its proper divisors (1).

195447225569 is an equidigital number, since it uses as much as digits as its factorization.

195447225569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216000, while the sum is 59.

The spelling of 195447225569 in words is "one hundred ninety-five billion, four hundred forty-seven million, two hundred twenty-five thousand, five hundred sixty-nine".