20204253305 has 8 divisors (see below), whose sum is σ = 24360010944. Its totient is φ = 16086798000.

The previous prime is 20204253301. The next prime is 20204253323. The reversal of 20204253305 is 50335240202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20204253305 - 2² = 20204253301 is a prime.

It is a super-2 number, since 2×20204253305² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20204253301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9574421 + ... + 9576530.

It is an arithmetic number, because the mean of its divisors is an integer number (3045001368).

Almost surely, 2^20204253305 is an apocalyptic number.

It is an amenable number.

20204253305 is a deficient number, since it is larger than the sum of its proper divisors (4155757639).

20204253305 is a wasteful number, since it uses less digits than its factorization.

20204253305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19151167.

The product of its (nonzero) digits is 7200, while the sum is 26.

Adding to 20204253305 its reverse (50335240202), we get a palindrome (70539493507).

The spelling of 20204253305 in words is "twenty billion, two hundred four million, two hundred fifty-three thousand, three hundred five".