1224405425 has 12 divisors (see below), whose sum is σ = 1522623900. Its totient is φ = 976710720.

The previous prime is 1224405407. The next prime is 1224405431. The reversal of 1224405425 is 5245044221.

It can be written as a sum of positive squares in 6 ways, for example, as 92486689 + 1131918736 = 9617^2 + 33644^2 .

It is not a de Polignac number, because 1224405425 - 2¹⁸ = 1224143281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61442 + ... + 78891.

It is an arithmetic number, because the mean of its divisors is an integer number (126885325).

Almost surely, 2^1224405425 is an apocalyptic number.

It is an amenable number.

1224405425 is a deficient number, since it is larger than the sum of its proper divisors (298218475).

1224405425 is a wasteful number, since it uses less digits than its factorization.

1224405425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140692 (or 140687 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 1224405425 is about 34991.5050405095. The cubic root of 1224405425 is about 1069.8143402216.

Adding to 1224405425 its reverse (5245044221), we get a palindrome (6469449646).

The spelling of 1224405425 in words is "one billion, two hundred twenty-four million, four hundred five thousand, four hundred twenty-five".