12440725444 has 81 divisors (see below), whose sum is σ = 26271297549. Its totient is φ = 5139671040.

The previous prime is 12440725441. The next prime is 12440725463. The reversal of 12440725444 is 44452704421.

The square root of 12440725444 is 111538.

It is a perfect power (a square), and thus also a powerful number.

12440725444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12247848900 + 192876544 = 110670^2 + 13888^2 .

It is not an unprimeable number, because it can be changed into a prime (12440725441) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 48407364 + ... + 48407620.

Almost surely, 2^12440725444 is an apocalyptic number.

12440725444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12440725444 is the 111538-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12440725444

12440725444 is an abundant number, since it is smaller than the sum of its proper divisors (13830572105).

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

12440725444 is an equidigital number, since it uses as much as digits as its factorization.

12440725444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 37.

The spelling of 12440725444 in words is "twelve billion, four hundred forty million, seven hundred twenty-five thousand, four hundred forty-four".