1255550200000 has 168 divisors, whose sum is σ = 3136953222144. Its totient is φ = 498543360000.

The previous prime is 1255550199991. The next prime is 1255550200019. The reversal of 1255550200000 is 20555521.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27377089 + ... + 27422911.

It is an arithmetic number, because the mean of its divisors is an integer number (18672340608).

Almost surely, 2^{1255550200000} is an apocalyptic number.

1255550200000 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 1255550200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568476611072).

1255550200000 is an abundant number, since it is smaller than the sum of its proper divisors (1881403022144).

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

1255550200000 is an frugal number, since it uses more digits than its factorization.

1255550200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45997 (or 45967 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

Adding to 1255550200000 its reverse (20555521), we get a palindrome (1255570755521).

The spelling of 1255550200000 in words is "one trillion, two hundred fifty-five billion, five hundred fifty million, two hundred thousand".