20243324225 has 6 divisors (see below), whose sum is σ = 25101722070. Its totient is φ = 16194659360.

The previous prime is 20243324173. The next prime is 20243324249. The reversal of 20243324225 is 52242334202.

It can be written as a sum of positive squares in 3 ways, for example, as 6553388209 + 13689936016 = 80953^2 + 117004^2 .

It is not a de Polignac number, because 20243324225 - 2⁶ = 20243324161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404866460 + ... + 404866509.

It is an arithmetic number, because the mean of its divisors is an integer number (4183620345).

Almost surely, 2^20243324225 is an apocalyptic number.

20243324225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20243324225 is a deficient number, since it is larger than the sum of its proper divisors (4858397845).

20243324225 is an equidigital number, since it uses as much as digits as its factorization.

20243324225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809732979 (or 809732974 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 20243324225 its reverse (52242334202), we get a palindrome (72485658427).

The spelling of 20243324225 in words is "twenty billion, two hundred forty-three million, three hundred twenty-four thousand, two hundred twenty-five".