1224245425 has 24 divisors (see below), whose sum is σ = 1669643136. Its totient is φ = 884811840.

The previous prime is 1224245401. The next prime is 1224245443. The reversal of 1224245425 is 5245424221.

It is a de Polignac number, because none of the positive numbers 2^k-1224245425 is a prime.

It is a Duffinian number.

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, 24799 + ... + 55348.

It is an arithmetic number, because the mean of its divisors is an integer number (69568464).

Almost surely, 2^1224245425 is an apocalyptic number.

It is an amenable number.

1224245425 is a deficient number, since it is larger than the sum of its proper divisors (445397711).

1224245425 is a wasteful number, since it uses less digits than its factorization.

1224245425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80217 (or 80212 counting only the distinct ones).

The product of its digits is 25600, while the sum is 31.

The square root of 1224245425 is about 34989.2186966214. The cubic root of 1224245425 is about 1069.7677386229.

Adding to 1224245425 its reverse (5245424221), we get a palindrome (6469669646).

The spelling of 1224245425 in words is "one billion, two hundred twenty-four million, two hundred forty-five thousand, four hundred twenty-five".