1225344432 has 40 divisors (see below), whose sum is σ = 3408972784. Its totient is φ = 377028864.

The previous prime is 1225344413. The next prime is 1225344433. The reversal of 1225344432 is 2344435221.

It is a self number, because there is not a number n which added to its sum of digits gives 1225344432.

It is not an unprimeable number, because it can be changed into a prime (1225344433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981223 + ... + 982470.

Almost surely, 2^1225344432 is an apocalyptic number.

1225344432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225344432 is an abundant number, since it is smaller than the sum of its proper divisors (2183628352).

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

1225344432 is a wasteful number, since it uses less digits than its factorization.

1225344432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963717 (or 1963711 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 1225344432 is about 35004.9201113215. The cubic root of 1225344432 is about 1070.0877535971.

Adding to 1225344432 its reverse (2344435221), we get a palindrome (3569779653).

The spelling of 1225344432 in words is "one billion, two hundred twenty-five million, three hundred forty-four thousand, four hundred thirty-two".