20125536364205 has 4 divisors (see below), whose sum is σ = 24150643637052. Its totient is φ = 16100429091360.

The previous prime is 20125536364169. The next prime is 20125536364217. The reversal of 20125536364205 is 50246363552102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6836792055076 + 13288744309129 = 2614726^2 + 3645373^2 .

It is not a de Polignac number, because 20125536364205 - 2⁸ = 20125536363949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012553636416 + ... + 2012553636425.

It is an arithmetic number, because the mean of its divisors is an integer number (6037660909263).

Almost surely, 2^{20125536364205} is an apocalyptic number.

It is an amenable number.

20125536364205 is a deficient number, since it is larger than the sum of its proper divisors (4025107272847).

20125536364205 is an equidigital number, since it uses as much as digits as its factorization.

20125536364205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025107272846.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 20125536364205 in words is "twenty trillion, one hundred twenty-five billion, five hundred thirty-six million, three hundred sixty-four thousand, two hundred five".