12402420225 has 48 divisors (see below), whose sum is σ = 22393816704. Its totient is φ = 6019776000.

The previous prime is 12402420223. The next prime is 12402420229. The reversal of 12402420225 is 52202420421.

12402420225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12402420225 - 2¹ = 12402420223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12402420195 and 12402420204.

It is not an unprimeable number, because it can be changed into a prime (12402420223) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 20356 + ... + 158805.

It is an arithmetic number, because the mean of its divisors is an integer number (466537848).

Almost surely, 2^12402420225 is an apocalyptic number.

12402420225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12402420225 is a deficient number, since it is larger than the sum of its proper divisors (9991396479).

12402420225 is a wasteful number, since it uses less digits than its factorization.

12402420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179258 (or 179253 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 12402420225 its reverse (52202420421), we get a palindrome (64604840646).

The spelling of 12402420225 in words is "twelve billion, four hundred two million, four hundred twenty thousand, two hundred twenty-five".