325665566489 has 2 divisors, whose sum is σ = 325665566490. Its totient is φ = 325665566488.

The previous prime is 325665566483. The next prime is 325665566533. The reversal of 325665566489 is 984665566523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243636024025 + 82029542464 = 493595^2 + 286408^2 .

It is a cyclic number.

It is not a de Polignac number, because 325665566489 - 2³⁶ = 256946089753 is a prime.

It is a super-2 number, since 2×325665566489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (325665566483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162832783244 + 162832783245.

It is an arithmetic number, because the mean of its divisors is an integer number (162832783245).

Almost surely, 2^325665566489 is an apocalyptic number.

It is an amenable number.

325665566489 is a deficient number, since it is larger than the sum of its proper divisors (1).

325665566489 is an equidigital number, since it uses as much as digits as its factorization.

325665566489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936000, while the sum is 65.

The spelling of 325665566489 in words is "three hundred twenty-five billion, six hundred sixty-five million, five hundred sixty-six thousand, four hundred eighty-nine".