255111128 has 8 divisors (see below), whose sum is σ = 478333380. Its totient is φ = 127555560.

The previous prime is 255111127. The next prime is 255111133. The reversal of 255111128 is 821111552.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 255111097 and 255111106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255111127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15944438 + ... + 15944453.

Almost surely, 2^255111128 is an apocalyptic number.

It is an amenable number.

255111128 is a deficient number, since it is larger than the sum of its proper divisors (223222252).

255111128 is a wasteful number, since it uses less digits than its factorization.

255111128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31888897 (or 31888893 counting only the distinct ones).

The product of its digits is 800, while the sum is 26.

The square root of 255111128 is about 15972.1985963110. The cubic root of 255111128 is about 634.2246746561.

The spelling of 255111128 in words is "two hundred fifty-five million, one hundred eleven thousand, one hundred twenty-eight".