12500212305 has 96 divisors (see below), whose sum is σ = 23956307712. Its totient is φ = 5451079680.

The previous prime is 12500212303. The next prime is 12500212327. The reversal of 12500212305 is 50321200521.

It is not a de Polignac number, because 12500212305 - 2¹ = 12500212303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12500212303) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7365217 + ... + 7366913.

It is an arithmetic number, because the mean of its divisors is an integer number (249544872).

Almost surely, 2^12500212305 is an apocalyptic number.

12500212305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12500212305 is a deficient number, since it is larger than the sum of its proper divisors (11456095407).

12500212305 is a wasteful number, since it uses less digits than its factorization.

12500212305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 12500212305 its reverse (50321200521), we get a palindrome (62821412826).

The spelling of 12500212305 in words is "twelve billion, five hundred million, two hundred twelve thousand, three hundred five".