12500126320 has 80 divisors (see below), whose sum is σ = 32303191392. Its totient is φ = 4459719680.

The previous prime is 12500126291. The next prime is 12500126321. The reversal of 12500126320 is 2362100521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12500126291 and 12500126300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500126321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87367 + ... + 180646.

Almost surely, 2^12500126320 is an apocalyptic number.

12500126320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12500126320 is an abundant number, since it is smaller than the sum of its proper divisors (19803065072).

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

12500126320 is a wasteful number, since it uses less digits than its factorization.

12500126320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268090 (or 268084 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 12500126320 its reverse (2362100521), we get a palindrome (14862226841).

It can be divided in two parts, 125001 and 26320, that added together give a square (151321 = 389²).

The spelling of 12500126320 in words is "twelve billion, five hundred million, one hundred twenty-six thousand, three hundred twenty".