20012305325 has 6 divisors (see below), whose sum is σ = 24815258634. Its totient is φ = 16009844240.

The previous prime is 20012305321. The next prime is 20012305331. The reversal of 20012305325 is 52350321002.

It can be written as a sum of positive squares in 3 ways, for example, as 563492644 + 19448812681 = 23738^2 + 139459^2 .

It is not a de Polignac number, because 20012305325 - 2² = 20012305321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20012305325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012305321) 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, 400246082 + ... + 400246131.

It is an arithmetic number, because the mean of its divisors is an integer number (4135876439).

Almost surely, 2^20012305325 is an apocalyptic number.

20012305325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20012305325 is a deficient number, since it is larger than the sum of its proper divisors (4802953309).

20012305325 is an equidigital number, since it uses as much as digits as its factorization.

20012305325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800492223 (or 800492218 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 20012305325 its reverse (52350321002), we get a palindrome (72362626327).

The spelling of 20012305325 in words is "twenty billion, twelve million, three hundred five thousand, three hundred twenty-five".