223144525 has 6 divisors (see below), whose sum is σ = 276699242. Its totient is φ = 178515600.

The previous prime is 223144513. The next prime is 223144529. The reversal of 223144525 is 525441322.

It can be written as a sum of positive squares in 3 ways, for example, as 209764 + 222934761 = 458^2 + 14931^2 .

It is not a de Polignac number, because 223144525 - 2⁹ = 223144013 is a prime.

It is a super-3 number, since 3×223144525³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223144493 and 223144502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223144529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4462866 + ... + 4462915.

Almost surely, 2^223144525 is an apocalyptic number.

223144525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223144525 is a deficient number, since it is larger than the sum of its proper divisors (53554717).

223144525 is an equidigital number, since it uses as much as digits as its factorization.

223144525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8925791 (or 8925786 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 223144525 is about 14938.0227941987. The cubic root of 223144525 is about 606.5436753383.

Adding to 223144525 its reverse (525441322), we get a palindrome (748585847).

The spelling of 223144525 in words is "two hundred twenty-three million, one hundred forty-four thousand, five hundred twenty-five".