12445122400 has 72 divisors (see below), whose sum is σ = 30879836064. Its totient is φ = 4896422400.

The previous prime is 12445122301. The next prime is 12445122413. The reversal of 12445122400 is 422154421.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78712 + ... + 176311.

It is an arithmetic number, because the mean of its divisors is an integer number (428886612).

Almost surely, 2^12445122400 is an apocalyptic number.

12445122400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12445122400 is an abundant number, since it is smaller than the sum of its proper divisors (18434713664).

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

12445122400 is a wasteful number, since it uses less digits than its factorization.

12445122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255104 (or 255091 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 12445122400 its reverse (422154421), we get a palindrome (12867276821).

The spelling of 12445122400 in words is "twelve billion, four hundred forty-five million, one hundred twenty-two thousand, four hundred".