325685348561 has 4 divisors (see below), whose sum is σ = 329042929572. Its totient is φ = 322327767552.

The previous prime is 325685348551. The next prime is 325685348609. The reversal of 325685348561 is 165843586523.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203090830336 + 122594518225 = 450656^2 + 350135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325685348561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 325685348497 and 325685348506.

It is not an unprimeable number, because it can be changed into a prime (325685348551) 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 in 3 ways as a sum of consecutive naturals, for example, 1678790360 + ... + 1678790553.

It is an arithmetic number, because the mean of its divisors is an integer number (82260732393).

Almost surely, 2^325685348561 is an apocalyptic number.

It is an amenable number.

325685348561 is a deficient number, since it is larger than the sum of its proper divisors (3357581011).

325685348561 is an equidigital number, since it uses as much as digits as its factorization.

325685348561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357581010.

The product of its digits is 20736000, while the sum is 56.

The spelling of 325685348561 in words is "three hundred twenty-five billion, six hundred eighty-five million, three hundred forty-eight thousand, five hundred sixty-one".