20125533030305 has 16 divisors (see below), whose sum is σ = 24167315163600. Its totient is φ = 16089312645120.

The previous prime is 20125533030299. The next prime is 20125533030391. The reversal of 20125533030305 is 50303033552102.

It can be written as a sum of positive squares in 8 ways, for example, as 439344934561 + 19686188095744 = 662831^2 + 4436912^2 .

It is not a de Polignac number, because 20125533030305 - 2⁴ = 20125533030289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50377745 + ... + 50775665.

It is an arithmetic number, because the mean of its divisors is an integer number (1510457197725).

Almost surely, 2^{20125533030305} is an apocalyptic number.

It is an amenable number.

20125533030305 is a deficient number, since it is larger than the sum of its proper divisors (4041782133295).

20125533030305 is a wasteful number, since it uses less digits than its factorization.

20125533030305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404884.

The product of its (nonzero) digits is 40500, while the sum is 32.

Adding to 20125533030305 its reverse (50303033552102), we get a palindrome (70428566582407).

The spelling of 20125533030305 in words is "twenty trillion, one hundred twenty-five billion, five hundred thirty-three million, thirty thousand, three hundred five".