1223445125 has 64 divisors (see below), whose sum is σ = 1817786880. Its totient is φ = 804672000.

The previous prime is 1223445089. The next prime is 1223445133. The reversal of 1223445125 is 5215443221.

It is not a de Polignac number, because 1223445125 - 2⁸ = 1223444869 is a prime.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 2403371 + ... + 2403879.

It is an arithmetic number, because the mean of its divisors is an integer number (28402920).

Almost surely, 2^1223445125 is an apocalyptic number.

It is an amenable number.

1223445125 is a deficient number, since it is larger than the sum of its proper divisors (594341755).

1223445125 is an equidigital number, since it uses as much as digits as its factorization.

1223445125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 629 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 1223445125 is about 34977.7804470209. The cubic root of 1223445125 is about 1069.5345822840.

Adding to 1223445125 its reverse (5215443221), we get a palindrome (6438888346).

The spelling of 1223445125 in words is "one billion, two hundred twenty-three million, four hundred forty-five thousand, one hundred twenty-five".