255216536625144 has 128 divisors (see below), whose sum is σ = 670617228314880. Its totient is φ = 80836847078400.

The previous prime is 255216536625133. The next prime is 255216536625203. The reversal of 255216536625144 is 441526635612552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279088579 + ... + 280001549.

It is an arithmetic number, because the mean of its divisors is an integer number (5239197096210).

Almost surely, 2^{255216536625144} is an apocalyptic number.

255216536625144 is a gapful number since it is divisible by the number (24) 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 255216536625144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335308614157440).

255216536625144 is an abundant number, since it is smaller than the sum of its proper divisors (415400691689736).

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

255216536625144 is a wasteful number, since it uses less digits than its factorization.

255216536625144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920381 (or 920377 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 57.

The spelling of 255216536625144 in words is "two hundred fifty-five trillion, two hundred sixteen billion, five hundred thirty-six million, six hundred twenty-five thousand, one hundred forty-four".