255889555442 has 16 divisors (see below), whose sum is σ = 394210050432. Its totient is φ = 124508165040.

The previous prime is 255889555423. The next prime is 255889555451. The reversal of 255889555442 is 244555988552.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5466473 + ... + 5513084.

It is an arithmetic number, because the mean of its divisors is an integer number (24638128152).

Almost surely, 2^255889555442 is an apocalyptic number.

255889555442 is a deficient number, since it is larger than the sum of its proper divisors (138320494990).

255889555442 is a wasteful number, since it uses less digits than its factorization.

255889555442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10979873.

The product of its digits is 115200000, while the sum is 62.

The spelling of 255889555442 in words is "two hundred fifty-five billion, eight hundred eighty-nine million, five hundred fifty-five thousand, four hundred forty-two".