20005423325 has 6 divisors (see below), whose sum is σ = 24806724954. Its totient is φ = 16004338640.

The previous prime is 20005423309. The next prime is 20005423327. The reversal of 20005423325 is 52332450002.

It can be written as a sum of positive squares in 3 ways, for example, as 308142916 + 19697280409 = 17554^2 + 140347^2 .

It is not a de Polignac number, because 20005423325 - 2⁴ = 20005423309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20005423294 and 20005423303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005423327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400108442 + ... + 400108491.

It is an arithmetic number, because the mean of its divisors is an integer number (4134454159).

Almost surely, 2^20005423325 is an apocalyptic number.

20005423325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20005423325 is a deficient number, since it is larger than the sum of its proper divisors (4801301629).

20005423325 is an equidigital number, since it uses as much as digits as its factorization.

20005423325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800216943 (or 800216938 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

Adding to 20005423325 its reverse (52332450002), we get a palindrome (72337873327).

The spelling of 20005423325 in words is "twenty billion, five million, four hundred twenty-three thousand, three hundred twenty-five".