9425385857647 has 2 divisors, whose sum is σ = 9425385857648. Its totient is φ = 9425385857646.

The previous prime is 9425385857603. The next prime is 9425385857651. The reversal of 9425385857647 is 7467585835249.

It is a strong prime.

It is an emirp because it is prime and its reverse (7467585835249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9425385857647 - 2⁴³ = 629292835439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9425385857647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9425385857347) 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, 4712692928823 + 4712692928824.

It is an arithmetic number, because the mean of its divisors is an integer number (4712692928824).

Almost surely, 2^{9425385857647} is an apocalyptic number.

9425385857647 is a deficient number, since it is larger than the sum of its proper divisors (1).

9425385857647 is an equidigital number, since it uses as much as digits as its factorization.

9425385857647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128000, while the sum is 73.

The spelling of 9425385857647 in words is "nine trillion, four hundred twenty-five billion, three hundred eighty-five million, eight hundred fifty-seven thousand, six hundred forty-seven".