325642134637 has 2 divisors, whose sum is σ = 325642134638. Its totient is φ = 325642134636.

The previous prime is 325642134593. The next prime is 325642134707. The reversal of 325642134637 is 736431246523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251255572516 + 74386562121 = 501254^2 + 272739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325642134637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325642131637) 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, 162821067318 + 162821067319.

It is an arithmetic number, because the mean of its divisors is an integer number (162821067319).

Almost surely, 2^325642134637 is an apocalyptic number.

It is an amenable number.

325642134637 is a deficient number, since it is larger than the sum of its proper divisors (1).

325642134637 is an equidigital number, since it uses as much as digits as its factorization.

325642134637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 46.

The spelling of 325642134637 in words is "three hundred twenty-five billion, six hundred forty-two million, one hundred thirty-four thousand, six hundred thirty-seven".