1225243424 has 24 divisors (see below), whose sum is σ = 2539157040. Its totient is φ = 580378176.

The previous prime is 1225243421. The next prime is 1225243433. The reversal of 1225243424 is 4243425221.

It is not an unprimeable number, because it can be changed into a prime (1225243421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1006994 + ... + 1008209.

It is an arithmetic number, because the mean of its divisors is an integer number (105798210).

Almost surely, 2^1225243424 is an apocalyptic number.

It is an amenable number.

1225243424 is an abundant number, since it is smaller than the sum of its proper divisors (1313913616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225243424 is a wasteful number, since it uses less digits than its factorization.

1225243424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015232 (or 2015224 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

The square root of 1225243424 is about 35003.4773129756. The cubic root of 1225243424 is about 1070.0583495126.

Adding to 1225243424 its reverse (4243425221), we get a palindrome (5468668645).

The spelling of 1225243424 in words is "one billion, two hundred twenty-five million, two hundred forty-three thousand, four hundred twenty-four".