325547745491 has 2 divisors, whose sum is σ = 325547745492. Its totient is φ = 325547745490.

The previous prime is 325547745437. The next prime is 325547745499. The reversal of 325547745491 is 194547745523.

It is a strong prime.

It is an emirp because it is prime and its reverse (194547745523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 325547745491 - 2⁶ = 325547745427 is a prime.

It is not a weakly prime, because it can be changed into another prime (325547745499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162773872745 + 162773872746.

It is an arithmetic number, because the mean of its divisors is an integer number (162773872746).

Almost surely, 2^325547745491 is an apocalyptic number.

325547745491 is a deficient number, since it is larger than the sum of its proper divisors (1).

325547745491 is an equidigital number, since it uses as much as digits as its factorization.

325547745491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168000, while the sum is 56.

The spelling of 325547745491 in words is "three hundred twenty-five billion, five hundred forty-seven million, seven hundred forty-five thousand, four hundred ninety-one".