20204430025 has 12 divisors (see below), whose sum is σ = 26980685452. Its totient is φ = 14920194240.

The previous prime is 20204430013. The next prime is 20204430061. The reversal of 20204430025 is 52003440202.

It can be written as a sum of positive squares in 6 ways, for example, as 935381056 + 19269048969 = 30584^2 + 138813^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20204430025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20204429978 and 20204430005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31083414 + ... + 31084063.

Almost surely, 2^20204430025 is an apocalyptic number.

20204430025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20204430025 is a deficient number, since it is larger than the sum of its proper divisors (6776255427).

20204430025 is a wasteful number, since it uses less digits than its factorization.

20204430025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62167500 (or 62167495 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 20204430025 its reverse (52003440202), we get a palindrome (72207870227).

The spelling of 20204430025 in words is "twenty billion, two hundred four million, four hundred thirty thousand, twenty-five".