20325205099 has 4 divisors (see below), whose sum is σ = 20553578280. Its totient is φ = 20096831920.

The previous prime is 20325205093. The next prime is 20325205111. The reversal of 20325205099 is 99050252302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20325205099 - 2⁷ = 20325204971 is a prime.

It is a super-2 number, since 2×20325205099² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20325205093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114186457 + ... + 114186634.

It is an arithmetic number, because the mean of its divisors is an integer number (5138394570).

Almost surely, 2^20325205099 is an apocalyptic number.

20325205099 is a deficient number, since it is larger than the sum of its proper divisors (228373181).

20325205099 is an equidigital number, since it uses as much as digits as its factorization.

20325205099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228373180.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 20325205099 in words is "twenty billion, three hundred twenty-five million, two hundred five thousand, ninety-nine".