20325005171 has 8 divisors (see below), whose sum is σ = 21225576960. Its totient is φ = 19425839752.

The previous prime is 20325005123. The next prime is 20325005179. The reversal of 20325005171 is 17150052302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20325005171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20325005171.

It is not an unprimeable number, because it can be changed into a prime (20325005179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321995 + ... + 379908.

It is an arithmetic number, because the mean of its divisors is an integer number (2653197120).

Almost surely, 2^20325005171 is an apocalyptic number.

20325005171 is a deficient number, since it is larger than the sum of its proper divisors (900571789).

20325005171 is a wasteful number, since it uses less digits than its factorization.

20325005171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703185.

The product of its (nonzero) digits is 2100, while the sum is 26.

Adding to 20325005171 its reverse (17150052302), we get a palindrome (37475057473).

The spelling of 20325005171 in words is "twenty billion, three hundred twenty-five million, five thousand, one hundred seventy-one".