12421134430425 has 144 divisors (see below), whose sum is σ = 25631318419200. Its totient is φ = 5632453854720.

The previous prime is 12421134430387. The next prime is 12421134430427. The reversal of 12421134430425 is 52403443112421.

12421134430425 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 1 + 1 + 344 + 304 + 2 + 5 = 666.

It is not a de Polignac number, because 12421134430425 - 2⁶ = 12421134430361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12421134430425.

It is not an unprimeable number, because it can be changed into a prime (12421134430427) 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 143 ways as a sum of consecutive naturals, for example, 174327907 + ... + 174399143.

It is an arithmetic number, because the mean of its divisors is an integer number (177995266800).

Almost surely, 2^{12421134430425} is an apocalyptic number.

12421134430425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12421134430425 is an abundant number, since it is smaller than the sum of its proper divisors (13210183988775).

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

12421134430425 is a wasteful number, since it uses less digits than its factorization.

12421134430425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72152 (or 72144 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 12421134430425 its reverse (52403443112421), we get a palindrome (64824577542846).

The spelling of 12421134430425 in words is "twelve trillion, four hundred twenty-one billion, one hundred thirty-four million, four hundred thirty thousand, four hundred twenty-five".