255801128850 has 72 divisors (see below), whose sum is σ = 690813493812. Its totient is φ = 67860172800.

The previous prime is 255801128839. The next prime is 255801128857. The reversal of 255801128850 is 58821108552.

255801128850 is a `hidden beast` number, since 2 + 5 + 580 + 1 + 12 + 8 + 8 + 50 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 147804109209 + 107997019641 = 384453^2 + 328629^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 255801128796 and 255801128805.

It is not an unprimeable number, because it can be changed into a prime (255801128857) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1385811 + ... + 1559510.

Almost surely, 2^255801128850 is an apocalyptic number.

255801128850 is an abundant number, since it is smaller than the sum of its proper divisors (435012364962).

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

255801128850 is a wasteful number, since it uses less digits than its factorization.

255801128850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945532 (or 2945524 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 45.

The spelling of 255801128850 in words is "two hundred fifty-five billion, eight hundred one million, one hundred twenty-eight thousand, eight hundred fifty".