12225013440 has 112 divisors (see below), whose sum is σ = 40857342720. Its totient is φ = 3088419840.

The previous prime is 12225013397. The next prime is 12225013447. The reversal of 12225013440 is 4431052221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12225013440.

It is not an unprimeable number, because it can be changed into a prime (12225013447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316876 + ... + 353355.

Almost surely, 2^12225013440 is an apocalyptic number.

12225013440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12225013440 is an abundant number, since it is smaller than the sum of its proper divisors (28632329280).

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

12225013440 is a wasteful number, since it uses less digits than its factorization.

12225013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670270 (or 670260 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 12225013440 its reverse (4431052221), we get a palindrome (16656065661).

The spelling of 12225013440 in words is "twelve billion, two hundred twenty-five million, thirteen thousand, four hundred forty".