12255203400 has 192 divisors, whose sum is σ = 42456657600. Its totient is φ = 2898432000.

The previous prime is 12255203393. The next prime is 12255203407. The reversal of 12255203400 is 430255221.

It is an interprime number because it is at equal distance from previous prime (12255203393) and next prime (12255203407).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12255203407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247956 + ... + 293244.

It is an arithmetic number, because the mean of its divisors is an integer number (221128425).

Almost surely, 2^12255203400 is an apocalyptic number.

12255203400 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 12255203400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21228328800).

12255203400 is an abundant number, since it is smaller than the sum of its proper divisors (30201454200).

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

12255203400 is a wasteful number, since it uses less digits than its factorization.

12255203400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45360 (or 45351 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 12255203400 its reverse (430255221), we get a palindrome (12685458621).

The spelling of 12255203400 in words is "twelve billion, two hundred fifty-five million, two hundred three thousand, four hundred".