325886561081 has 2 divisors, whose sum is σ = 325886561082. Its totient is φ = 325886561080.

The previous prime is 325886561051. The next prime is 325886561089. The reversal of 325886561081 is 180165688523.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279401045056 + 46485516025 = 528584^2 + 215605^2 .

It is an emirp because it is prime and its reverse (180165688523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 325886561081 - 2¹⁰ = 325886560057 is a prime.

It is a super-2 number, since 2×325886561081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (325886561089) 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, 162943280540 + 162943280541.

It is an arithmetic number, because the mean of its divisors is an integer number (162943280541).

Almost surely, 2^325886561081 is an apocalyptic number.

It is an amenable number.

325886561081 is a deficient number, since it is larger than the sum of its proper divisors (1).

325886561081 is an equidigital number, since it uses as much as digits as its factorization.

325886561081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 325886561081 in words is "three hundred twenty-five billion, eight hundred eighty-six million, five hundred sixty-one thousand, eighty-one".