223523425 has 12 divisors (see below), whose sum is σ = 277800300. Its totient is φ = 178411520.

The previous prime is 223523383. The next prime is 223523441. The reversal of 223523425 is 524325322.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 34433424 + 189090001 = 5868^2 + 13751^2 .

It is not a de Polignac number, because 223523425 - 2⁹ = 223522913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223523393 and 223523402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1269 + ... + 21181.

It is an arithmetic number, because the mean of its divisors is an integer number (23150025).

Almost surely, 2^223523425 is an apocalyptic number.

223523425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223523425 is a deficient number, since it is larger than the sum of its proper divisors (54276875).

223523425 is a wasteful number, since it uses less digits than its factorization.

223523425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372 (or 20367 counting only the distinct ones).

The product of its digits is 14400, while the sum is 28.

The square root of 223523425 is about 14950.6998163966. The cubic root of 223523425 is about 606.8867854716.

Adding to 223523425 its reverse (524325322), we get a palindrome (747848747).

The spelling of 223523425 in words is "two hundred twenty-three million, five hundred twenty-three thousand, four hundred twenty-five".