255288705428 has 12 divisors (see below), whose sum is σ = 451360959252. Its totient is φ = 126328431360.

The previous prime is 255288705319. The next prime is 255288705443. The reversal of 255288705428 is 824507882552.

It can be written as a sum of positive squares in 2 ways, for example, as 193739064964 + 61549640464 = 440158^2 + 248092^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328979903 + ... + 328980678.

It is an arithmetic number, because the mean of its divisors is an integer number (37613413271).

Almost surely, 2^255288705428 is an apocalyptic number.

It is an amenable number.

255288705428 is a deficient number, since it is larger than the sum of its proper divisors (196072253824).

255288705428 is a wasteful number, since it uses less digits than its factorization.

255288705428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657960682 (or 657960680 counting only the distinct ones).

The product of its (nonzero) digits is 14336000, while the sum is 56.

The spelling of 255288705428 in words is "two hundred fifty-five billion, two hundred eighty-eight million, seven hundred five thousand, four hundred twenty-eight".