223444425 has 24 divisors (see below), whose sum is σ = 385493184. Its totient is φ = 113988160.

The previous prime is 223444409. The next prime is 223444453. The reversal of 223444425 is 524444322.

It is not a de Polignac number, because 223444425 - 2⁴ = 223444409 is a prime.

It is a super-2 number, since 2×223444425² = 99854822127161250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223444392 and 223444401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63042 + ... + 66491.

It is an arithmetic number, because the mean of its divisors is an integer number (16062216).

Almost surely, 2^223444425 is an apocalyptic number.

223444425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223444425 is a deficient number, since it is larger than the sum of its proper divisors (162048759).

223444425 is a wasteful number, since it uses less digits than its factorization.

223444425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129569 (or 129564 counting only the distinct ones).

The product of its digits is 30720, while the sum is 30.

The square root of 223444425 is about 14948.0575661187. The cubic root of 223444425 is about 606.8152796098.

Adding to 223444425 its reverse (524444322), we get a palindrome (747888747).

The spelling of 223444425 in words is "two hundred twenty-three million, four hundred forty-four thousand, four hundred twenty-five".