12256312600 has 96 divisors (see below), whose sum is σ = 32707415520. Its totient is φ = 4184017920.

The previous prime is 12256312561. The next prime is 12256312603. The reversal of 12256312600 is 621365221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256312603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307414 + ... + 344986.

It is an arithmetic number, because the mean of its divisors is an integer number (340702245).

Almost surely, 2^12256312600 is an apocalyptic number.

12256312600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12256312600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16353707760).

12256312600 is an abundant number, since it is smaller than the sum of its proper divisors (20451102920).

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

12256312600 is a wasteful number, since it uses less digits than its factorization.

12256312600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37829 (or 37820 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 12256312600 its reverse (621365221), we get a palindrome (12877677821).

The spelling of 12256312600 in words is "twelve billion, two hundred fifty-six million, three hundred twelve thousand, six hundred".