20204530025 has 6 divisors (see below), whose sum is σ = 25053617262. Its totient is φ = 16163624000.

The previous prime is 20204530019. The next prime is 20204530051. The reversal of 20204530025 is 52003540202.

It can be written as a sum of positive squares in 3 ways, for example, as 1522014169 + 18682515856 = 39013^2 + 136684^2 .

It is not a de Polignac number, because 20204530025 - 2²² = 20200335721 is a prime.

It is a super-2 number, since 2×20204530025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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, 404090576 + ... + 404090625.

It is an arithmetic number, because the mean of its divisors is an integer number (4175602877).

Almost surely, 2^20204530025 is an apocalyptic number.

20204530025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20204530025 is a deficient number, since it is larger than the sum of its proper divisors (4849087237).

20204530025 is an equidigital number, since it uses as much as digits as its factorization.

20204530025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808181211 (or 808181206 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The spelling of 20204530025 in words is "twenty billion, two hundred four million, five hundred thirty thousand, twenty-five".