255804120000 has 840 divisors, whose sum is σ = 1076623307760. Its totient is φ = 57231360000.

The previous prime is 255804119983. The next prime is 255804120007. The reversal of 255804120000 is 21408552.

It is a happy number.

255804120000 is a `hidden beast` number, since 25 + 580 + 41 + 20 + 0 + 0 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255804120007) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 51477516 + ... + 51482484.

It is an arithmetic number, because the mean of its divisors is an integer number (1281694414).

Almost surely, 2^255804120000 is an apocalyptic number.

255804120000 is a gapful number since it is divisible by the number (20) 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 255804120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538311653880).

255804120000 is an abundant number, since it is smaller than the sum of its proper divisors (820819187760).

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

255804120000 is a wasteful number, since it uses less digits than its factorization.

255804120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031 (or 5003 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 255804120000 its reverse (21408552), we get a palindrome (255825528552).

The spelling of 255804120000 in words is "two hundred fifty-five billion, eight hundred four million, one hundred twenty thousand".