1255031550000 has 480 divisors, whose sum is σ = 4658129985600. Its totient is φ = 323124480000.

The previous prime is 1255031549999. The next prime is 1255031550007. The reversal of 1255031550000 is 551305521.

1255031550000 is a `hidden beast` number, since 1 + 2 + 5 + 503 + 155 + 0 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1255031550007) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 39133972 + ... + 39166028.

It is an arithmetic number, because the mean of its divisors is an integer number (9704437470).

Almost surely, 2^{1255031550000} is an apocalyptic number.

1255031550000 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 1255031550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2329064992800).

1255031550000 is an abundant number, since it is smaller than the sum of its proper divisors (3403098435600).

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

1255031550000 is an equidigital number, since it uses as much as digits as its factorization.

1255031550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32128 (or 32096 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

Adding to 1255031550000 its reverse (551305521), we get a palindrome (1255582855521).

The spelling of 1255031550000 in words is "one trillion, two hundred fifty-five billion, thirty-one million, five hundred fifty thousand".