12505212430 has 16 divisors (see below), whose sum is σ = 22780581264. Its totient is φ = 4941818560.

The previous prime is 12505212413. The next prime is 12505212431. The reversal of 12505212430 is 3421250521.

It is a junction number, because it is equal to n+sod(n) for n = 12505212395 and 12505212404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505212431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7532431 + ... + 7534090.

It is an arithmetic number, because the mean of its divisors is an integer number (1423786329).

Almost surely, 2^12505212430 is an apocalyptic number.

12505212430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12505212430 is a deficient number, since it is larger than the sum of its proper divisors (10275368834).

12505212430 is a wasteful number, since it uses less digits than its factorization.

12505212430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15066611.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 12505212430 its reverse (3421250521), we get a palindrome (15926462951).

The spelling of 12505212430 in words is "twelve billion, five hundred five million, two hundred twelve thousand, four hundred thirty".