12634355225 has 12 divisors (see below), whose sum is σ = 15690985296. Its totient is φ = 10091752080.

The previous prime is 12634355221. The next prime is 12634355291. The reversal of 12634355225 is 52255343621.

It is not a de Polignac number, because 12634355225 - 2² = 12634355221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12634355221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376907 + ... + 409056.

It is an arithmetic number, because the mean of its divisors is an integer number (1307582108).

Almost surely, 2^12634355225 is an apocalyptic number.

It is an amenable number.

12634355225 is a deficient number, since it is larger than the sum of its proper divisors (3056630071).

12634355225 is an equidigital number, since it uses as much as digits as its factorization.

12634355225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786616 (or 786611 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

Adding to 12634355225 its reverse (52255343621), we get a palindrome (64889698846).

The spelling of 12634355225 in words is "twelve billion, six hundred thirty-four million, three hundred fifty-five thousand, two hundred twenty-five".