12210203425 has 18 divisors (see below), whose sum is σ = 17612597238. Its totient is φ = 8372710080.

The previous prime is 12210203381. The next prime is 12210203429. The reversal of 12210203425 is 52430201221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 486511249 + 11723692176 = 22057^2 + 108276^2 .

It is not a de Polignac number, because 12210203425 - 2⁹ = 12210202913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210203396 and 12210203405.

It is not an unprimeable number, because it can be changed into a prime (12210203429) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4982532 + ... + 4984981.

Almost surely, 2^12210203425 is an apocalyptic number.

It is an amenable number.

12210203425 is a deficient number, since it is larger than the sum of its proper divisors (5402393813).

12210203425 is an equidigital number, since it uses as much as digits as its factorization.

12210203425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9967537 (or 9967525 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12210203425 its reverse (52430201221), we get a palindrome (64640404646).

The spelling of 12210203425 in words is "twelve billion, two hundred ten million, two hundred three thousand, four hundred twenty-five".