325507280605621 has 4 divisors (see below), whose sum is σ = 330843465533644. Its totient is φ = 320171095677600.

The previous prime is 325507280605609. The next prime is 325507280605673. The reversal of 325507280605621 is 126506082705523.

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 58416442594225 + 267090838011396 = 7643065^2 + 16342914^2 .

It is a cyclic number.

It is not a de Polignac number, because 325507280605621 - 2⁴¹ = 323308257350069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325507280605681) 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 in 3 ways as a sum of consecutive naturals, for example, 2668092463920 + ... + 2668092464041.

It is an arithmetic number, because the mean of its divisors is an integer number (82710866383411).

Almost surely, 2^{325507280605621} is an apocalyptic number.

It is an amenable number.

325507280605621 is a deficient number, since it is larger than the sum of its proper divisors (5336184928023).

325507280605621 is an equidigital number, since it uses as much as digits as its factorization.

325507280605621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336184928022.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 325507280605621 in words is "three hundred twenty-five trillion, five hundred seven billion, two hundred eighty million, six hundred five thousand, six hundred twenty-one".