12517025220 has 72 divisors (see below), whose sum is σ = 43392358464. Its totient is φ = 2861034048.

The previous prime is 12517025189. The next prime is 12517025233. The reversal of 12517025220 is 2252071521.

12517025220 is a `hidden beast` number, since 125 + 17 + 0 + 2 + 522 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4965814 + ... + 4968333.

Almost surely, 2^12517025220 is an apocalyptic number.

12517025220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12517025220 is an abundant number, since it is smaller than the sum of its proper divisors (30875333244).

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

12517025220 is a wasteful number, since it uses less digits than its factorization.

12517025220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9934169 (or 9934164 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

Adding to 12517025220 its reverse (2252071521), we get a palindrome (14769096741).

The spelling of 12517025220 in words is "twelve billion, five hundred seventeen million, twenty-five thousand, two hundred twenty".