12421235425 has 12 divisors (see below), whose sum is σ = 15405068080. Its totient is φ = 9935223120.

The previous prime is 12421235383. The next prime is 12421235441. The reversal of 12421235425 is 52453212421.

It is a happy number.

It is not a de Polignac number, because 12421235425 - 2³¹ = 10273751777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109966 + ... + 192184.

Almost surely, 2^12421235425 is an apocalyptic number.

It is an amenable number.

12421235425 is a deficient number, since it is larger than the sum of its proper divisors (2983832655).

12421235425 is an equidigital number, since it uses as much as digits as its factorization.

12421235425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88272 (or 88267 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

Adding to 12421235425 its reverse (52453212421), we get a palindrome (64874447846).

The spelling of 12421235425 in words is "twelve billion, four hundred twenty-one million, two hundred thirty-five thousand, four hundred twenty-five".