20225163 has 8 divisors (see below), whose sum is σ = 30819328. Its totient is φ = 11557224.

The previous prime is 20225159. The next prime is 20225167. The reversal of 20225163 is 36152202.

It is an interprime number because it is at equal distance from previous prime (20225159) and next prime (20225167).

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

It is not a de Polignac number, because 20225163 - 2² = 20225159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 963103 = 20225163 / (2 + 0 + 2 + 2 + 5 + 1 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20225167) 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, 481531 + ... + 481572.

It is an arithmetic number, because the mean of its divisors is an integer number (3852416).

Almost surely, 2^20225163 is an apocalyptic number.

20225163 is a deficient number, since it is larger than the sum of its proper divisors (10594165).

20225163 is an equidigital number, since it uses as much as digits as its factorization.

20225163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963113.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20225163 is about 4497.2394866184. The cubic root of 20225163 is about 272.4566067312.

Adding to 20225163 its reverse (36152202), we get a palindrome (56377365).

The spelling of 20225163 in words is "twenty million, two hundred twenty-five thousand, one hundred sixty-three".