12421242435025 has 24 divisors (see below), whose sum is σ = 15559337781504. Its totient is φ = 9835939680000.

The previous prime is 12421242434981. The next prime is 12421242435029. The reversal of 12421242435025 is 52053424212421.

It is a happy number.

It is not a de Polignac number, because 12421242435025 - 2⁷ = 12421242434897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12421242435029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 805789 + ... + 5048938.

It is an arithmetic number, because the mean of its divisors is an integer number (648305740896).

Almost surely, 2^{12421242435025} is an apocalyptic number.

It is an amenable number.

12421242435025 is a deficient number, since it is larger than the sum of its proper divisors (3138095346479).

12421242435025 is a wasteful number, since it uses less digits than its factorization.

12421242435025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855601 (or 5855596 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 12421242435025 its reverse (52053424212421), we get a palindrome (64474666647446).

The spelling of 12421242435025 in words is "twelve trillion, four hundred twenty-one billion, two hundred forty-two million, four hundred thirty-five thousand, twenty-five".