12441544425 has 18 divisors (see below), whose sum is σ = 22284188862. Its totient is φ = 6635490240.

The previous prime is 12441544421. The next prime is 12441544457. The reversal of 12441544425 is 52444514421.

12441544425 is a `hidden beast` number, since 124 + 41 + 54 + 442 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 3897130329 + 8544414096 = 62427^2 + 92436^2 .

It is not a de Polignac number, because 12441544425 - 2² = 12441544421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12441544425.

It is not an unprimeable number, because it can be changed into a prime (12441544421) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 27647652 + ... + 27648101.

Almost surely, 2^12441544425 is an apocalyptic number.

12441544425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12441544425 is a deficient number, since it is larger than the sum of its proper divisors (9842644437).

12441544425 is a wasteful number, since it uses less digits than its factorization.

12441544425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55295769 (or 55295761 counting only the distinct ones).

The product of its digits is 102400, while the sum is 36.

The spelling of 12441544425 in words is "twelve billion, four hundred forty-one million, five hundred forty-four thousand, four hundred twenty-five".