12225544032 has 96 divisors (see below), whose sum is σ = 34618866912. Its totient is φ = 3755372544.

The previous prime is 12225543991. The next prime is 12225544061. The reversal of 12225544032 is 23044552221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762078 + ... + 777954.

It is an arithmetic number, because the mean of its divisors is an integer number (360613197).

Almost surely, 2^12225544032 is an apocalyptic number.

12225544032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12225544032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17309433456).

12225544032 is an abundant number, since it is smaller than the sum of its proper divisors (22393322880).

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

12225544032 is a wasteful number, since it uses less digits than its factorization.

12225544032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16520 (or 16512 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 12225544032 in words is "twelve billion, two hundred twenty-five million, five hundred forty-four thousand, thirty-two".