12500237216 has 24 divisors (see below), whose sum is σ = 24612388164. Its totient is φ = 6249472000.

The previous prime is 12500237149. The next prime is 12500237219. The reversal of 12500237216 is 61273200521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12485827600 + 14409616 = 111740^2 + 3796^2 .

It is not an unprimeable number, because it can be changed into a prime (12500237219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499826 + ... + 524238.

Almost surely, 2^12500237216 is an apocalyptic number.

12500237216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12500237216 is a deficient number, since it is larger than the sum of its proper divisors (12112150948).

12500237216 is a wasteful number, since it uses less digits than its factorization.

12500237216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40424 (or 40416 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 12500237216 its reverse (61273200521), we get a palindrome (73773437737).

The spelling of 12500237216 in words is "twelve billion, five hundred million, two hundred thirty-seven thousand, two hundred sixteen".