20255223 has 8 divisors (see below), whose sum is σ = 27063936. Its totient is φ = 13475000.

The previous prime is 20255201. The next prime is 20255227. The reversal of 20255223 is 32255202.

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

It is a cyclic number.

It is not a de Polignac number, because 20255223 - 2⁸ = 20254967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20255223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255227) 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, 5403 + ... + 8348.

It is an arithmetic number, because the mean of its divisors is an integer number (3382992).

Almost surely, 2^20255223 is an apocalyptic number.

20255223 is a deficient number, since it is larger than the sum of its proper divisors (6808713).

20255223 is a wasteful number, since it uses less digits than its factorization.

20255223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14245.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20255223 is about 4500.5802959174. The cubic root of 20255223 is about 272.5915210359.

Subtracting from 20255223 its sum of digits (21), we obtain a palindrome (20255202).

The spelling of 20255223 in words is "twenty million, two hundred fifty-five thousand, two hundred twenty-three".