255253280278 has 4 divisors (see below), whose sum is σ = 382879920420. Its totient is φ = 127626640138.

The previous prime is 255253280209. The next prime is 255253280291. The reversal of 255253280278 is 872082352552.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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 as a sum of consecutive naturals, namely, 63813320068 + ... + 63813320071.

It is an arithmetic number, because the mean of its divisors is an integer number (95719980105).

Almost surely, 2^255253280278 is an apocalyptic number.

255253280278 is a deficient number, since it is larger than the sum of its proper divisors (127626640142).

255253280278 is a wasteful number, since it uses less digits than its factorization.

255253280278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127626640141.

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 255253280278 in words is "two hundred fifty-five billion, two hundred fifty-three million, two hundred eighty thousand, two hundred seventy-eight".