20129205052025 has 24 divisors (see below), whose sum is σ = 25163786747904. Its totient is φ = 15972097881600.

The previous prime is 20129205052013. The next prime is 20129205052031. The reversal of 20129205052025 is 52025050292102.

It is not a de Polignac number, because 20129205052025 - 2⁶ = 20129205051961 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 (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10491305 + ... + 12260745.

It is an arithmetic number, because the mean of its divisors is an integer number (1048491114496).

Almost surely, 2^{20129205052025} is an apocalyptic number.

20129205052025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20129205052025 is a deficient number, since it is larger than the sum of its proper divisors (5034581695879).

20129205052025 is a wasteful number, since it uses less digits than its factorization.

20129205052025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773161 (or 1773156 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 20129205052025 in words is "twenty trillion, one hundred twenty-nine billion, two hundred five million, fifty-two thousand, twenty-five".