20625535422223 has 4 divisors (see below), whose sum is σ = 21336760781640. Its totient is φ = 19914310062808.

The previous prime is 20625535422209. The next prime is 20625535422229. The reversal of 20625535422223 is 32222453552602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20625535422223 is a prime.

It is a super-2 number, since 2×20625535422223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20625535422223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625535422229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355612679665 + ... + 355612679722.

It is an arithmetic number, because the mean of its divisors is an integer number (5334190195410).

Almost surely, 2^{20625535422223} is an apocalyptic number.

20625535422223 is a deficient number, since it is larger than the sum of its proper divisors (711225359417).

20625535422223 is an equidigital number, since it uses as much as digits as its factorization.

20625535422223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711225359416.

The product of its (nonzero) digits is 1728000, while the sum is 43.

Adding to 20625535422223 its reverse (32222453552602), we get a palindrome (52847988974825).

The spelling of 20625535422223 in words is "twenty trillion, six hundred twenty-five billion, five hundred thirty-five million, four hundred twenty-two thousand, two hundred twenty-three".