20204325505 has 128 divisors (see below), whose sum is σ = 32444375040. Its totient is φ = 11730216960.

The previous prime is 20204325481. The next prime is 20204325523. The reversal of 20204325505 is 50552340202.

It is not a de Polignac number, because 20204325505 - 2⁹ = 20204324993 is a prime.

It is a super-2 number, since 2×20204325505² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26549325 + ... + 26550085.

It is an arithmetic number, because the mean of its divisors is an integer number (253471680).

Almost surely, 2^20204325505 is an apocalyptic number.

It is an amenable number.

20204325505 is a deficient number, since it is larger than the sum of its proper divisors (12240049535).

20204325505 is a wasteful number, since it uses less digits than its factorization.

20204325505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 12000, while the sum is 28.

Adding to 20204325505 its reverse (50552340202), we get a palindrome (70756665707).

The spelling of 20204325505 in words is "twenty billion, two hundred four million, three hundred twenty-five thousand, five hundred five".