20223425 has 6 divisors (see below), whose sum is σ = 25077078. Its totient is φ = 16178720.

The previous prime is 20223403. The next prime is 20223443. The reversal of 20223425 is 52432202.

It can be written as a sum of positive squares in 3 ways, for example, as 9409 + 20214016 = 97^2 + 4496^2 .

It is not a de Polignac number, because 20223425 - 2⁶ = 20223361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20223397 and 20223406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404444 + ... + 404493.

It is an arithmetic number, because the mean of its divisors is an integer number (4179513).

Almost surely, 2^20223425 is an apocalyptic number.

20223425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20223425 is a deficient number, since it is larger than the sum of its proper divisors (4853653).

20223425 is an equidigital number, since it uses as much as digits as its factorization.

20223425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808947 (or 808942 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20223425 is about 4497.0462528197. The cubic root of 20223425 is about 272.4488022099.

Adding to 20223425 its reverse (52432202), we get a palindrome (72655627).

The spelling of 20223425 in words is "twenty million, two hundred twenty-three thousand, four hundred twenty-five".