8425091667197 has 2 divisors, whose sum is σ = 8425091667198. Its totient is φ = 8425091667196.

The previous prime is 8425091667071. The next prime is 8425091667203. The reversal of 8425091667197 is 7917661905248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7945571426521 + 479520240676 = 2818789^2 + 692474^2 .

It is a cyclic number.

It is not a de Polignac number, because 8425091667197 - 2⁸ = 8425091666941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8425091667497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4212545833598 + 4212545833599.

It is an arithmetic number, because the mean of its divisors is an integer number (4212545833599).

Almost surely, 2^{8425091667197} is an apocalyptic number.

It is an amenable number.

8425091667197 is a deficient number, since it is larger than the sum of its proper divisors (1).

8425091667197 is an equidigital number, since it uses as much as digits as its factorization.

8425091667197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45722880, while the sum is 65.

The spelling of 8425091667197 in words is "eight trillion, four hundred twenty-five billion, ninety-one million, six hundred sixty-seven thousand, one hundred ninety-seven".