1251542325200 has 60 divisors (see below), whose sum is σ = 3007063850700. Its totient is φ = 500578068480.

The previous prime is 1251542325193. The next prime is 1251542325223. The reversal of 1251542325200 is 25232451521.

It can be written as a sum of positive squares in 6 ways, for example, as 31118371216 + 1220423953984 = 176404^2 + 1104728^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5344982 + ... + 5574218.

It is an arithmetic number, because the mean of its divisors is an integer number (50117730845).

Almost surely, 2^{1251542325200} is an apocalyptic number.

1251542325200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1251542325200 is an abundant number, since it is smaller than the sum of its proper divisors (1755521525500).

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

1251542325200 is a wasteful number, since it uses less digits than its factorization.

1251542325200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242904 (or 242893 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1251542325200 its reverse (25232451521), we get a palindrome (1276774776721).

The spelling of 1251542325200 in words is "one trillion, two hundred fifty-one billion, five hundred forty-two million, three hundred twenty-five thousand, two hundred".