12440401125 has 32 divisors (see below), whose sum is σ = 20839852800. Its totient is φ = 6590321600.

The previous prime is 12440401111. The next prime is 12440401139. The reversal of 12440401125 is 52110404421.

12440401125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12440401111) and next prime (12440401139).

It is not a de Polignac number, because 12440401125 - 2⁷ = 12440400997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12440401095 and 12440401104.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 55449 + ... + 167198.

It is an arithmetic number, because the mean of its divisors is an integer number (651245400).

Almost surely, 2^12440401125 is an apocalyptic number.

12440401125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12440401125 is a deficient number, since it is larger than the sum of its proper divisors (8399451675).

12440401125 is a wasteful number, since it uses less digits than its factorization.

12440401125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222814 (or 222804 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 12440401125 its reverse (52110404421), we get a palindrome (64550805546).

The spelling of 12440401125 in words is "twelve billion, four hundred forty million, four hundred one thousand, one hundred twenty-five".