325613161621 has 4 divisors (see below), whose sum is σ = 355214358144. Its totient is φ = 296011965100.

The previous prime is 325613161619. The next prime is 325613161631. The reversal of 325613161621 is 126161316523.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 325613161621 - 2¹ = 325613161619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325613161631) 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, 14800598245 + ... + 14800598266.

It is an arithmetic number, because the mean of its divisors is an integer number (88803589536).

Almost surely, 2^325613161621 is an apocalyptic number.

It is an amenable number.

325613161621 is a deficient number, since it is larger than the sum of its proper divisors (29601196523).

325613161621 is a wasteful number, since it uses less digits than its factorization.

325613161621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29601196522.

The product of its digits is 38880, while the sum is 37.

The spelling of 325613161621 in words is "three hundred twenty-five billion, six hundred thirteen million, one hundred sixty-one thousand, six hundred twenty-one".