20323436425 has 6 divisors (see below), whose sum is σ = 25201061198. Its totient is φ = 16258749120.

The previous prime is 20323436359. The next prime is 20323436467. The reversal of 20323436425 is 52463432302.

It can be written as a sum of positive squares in 3 ways, for example, as 4964047936 + 15359388489 = 70456^2 + 123933^2 .

It is not a de Polignac number, because 20323436425 - 2⁷ = 20323436297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406468704 + ... + 406468753.

Almost surely, 2^20323436425 is an apocalyptic number.

20323436425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20323436425 is a deficient number, since it is larger than the sum of its proper divisors (4877624773).

20323436425 is an equidigital number, since it uses as much as digits as its factorization.

20323436425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812937467 (or 812937462 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 20323436425 its reverse (52463432302), we get a palindrome (72786868727).

The spelling of 20323436425 in words is "twenty billion, three hundred twenty-three million, four hundred thirty-six thousand, four hundred twenty-five".