12525838218 has 40 divisors (see below), whose sum is σ = 28075082112. Its totient is φ = 4174100424.

The previous prime is 12525838211. The next prime is 12525838219. The reversal of 12525838218 is 81283852521.

12525838218 is a `hidden beast` number, since 1 + 2 + 5 + 258 + 382 + 18 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12525838211) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 711721 + ... + 729107.

Almost surely, 2^12525838218 is an apocalyptic number.

12525838218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12525838218 is an abundant number, since it is smaller than the sum of its proper divisors (15549243894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12525838218 is a wasteful number, since it uses less digits than its factorization.

12525838218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21848 (or 21839 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The spelling of 12525838218 in words is "twelve billion, five hundred twenty-five million, eight hundred thirty-eight thousand, two hundred eighteen".