20512112005025 has 24 divisors (see below), whose sum is σ = 26944101895680. Its totient is φ = 15437012783360.

The previous prime is 20512112004977. The next prime is 20512112005039. The reversal of 20512112005025 is 52050021121502.

It is a happy number.

It is not a de Polignac number, because 20512112005025 - 2²² = 20512107810721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20512112004985 and 20512112005003.

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, 10675985 + ... + 12449934.

It is an arithmetic number, because the mean of its divisors is an integer number (1122670912320).

Almost surely, 2^{20512112005025} is an apocalyptic number.

20512112005025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20512112005025 is a deficient number, since it is larger than the sum of its proper divisors (6431989890655).

20512112005025 is a wasteful number, since it uses less digits than its factorization.

20512112005025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23128033 (or 23128028 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 20512112005025 its reverse (52050021121502), we get a palindrome (72562133126527).

The spelling of 20512112005025 in words is "twenty trillion, five hundred twelve billion, one hundred twelve million, five thousand, twenty-five".