20325003505 has 8 divisors (see below), whose sum is σ = 24733525824. Its totient is φ = 16030988400.

The previous prime is 20325003473. The next prime is 20325003509. The reversal of 20325003505 is 50530052302.

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

It is not a de Polignac number, because 20325003505 - 2⁵ = 20325003473 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 20325003505.

It is not an unprimeable number, because it can be changed into a prime (20325003509) 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, 28626411 + ... + 28627120.

It is an arithmetic number, because the mean of its divisors is an integer number (3091690728).

Almost surely, 2^20325003505 is an apocalyptic number.

It is an amenable number.

20325003505 is a deficient number, since it is larger than the sum of its proper divisors (4408522319).

20325003505 is an equidigital number, since it uses as much as digits as its factorization.

20325003505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57253607.

The product of its (nonzero) digits is 4500, while the sum is 25.

Adding to 20325003505 its reverse (50530052302), we get a palindrome (70855055807).

The spelling of 20325003505 in words is "twenty billion, three hundred twenty-five million, three thousand, five hundred five".