55278025255 has 8 divisors (see below), whose sum is σ = 68473425024. Its totient is φ = 42795890400.

The previous prime is 55278025241. The next prime is 55278025291. The reversal of 55278025255 is 55252087255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55278025255 - 2⁹ = 55278024743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178316056 + ... + 178316365.

It is an arithmetic number, because the mean of its divisors is an integer number (8559178128).

Almost surely, 2^55278025255 is an apocalyptic number.

55278025255 is a deficient number, since it is larger than the sum of its proper divisors (13195399769).

55278025255 is a wasteful number, since it uses less digits than its factorization.

55278025255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356632457.

The product of its (nonzero) digits is 1400000, while the sum is 46.

The spelling of 55278025255 in words is "fifty-five billion, two hundred seventy-eight million, twenty-five thousand, two hundred fifty-five".