255250778056 has 8 divisors (see below), whose sum is σ = 478595208870. Its totient is φ = 127625389024.

The previous prime is 255250778039. The next prime is 255250778071. The reversal of 255250778056 is 650877052552.

It can be written as a sum of positive squares in only one way, i.e., 171420840900 + 83829937156 = 414030^2 + 289534^2 .

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

It is a super-2 number, since 2×255250778056² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255250777994 and 255250778012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15953173621 + ... + 15953173636.

Almost surely, 2^255250778056 is an apocalyptic number.

It is an amenable number.

255250778056 is a deficient number, since it is larger than the sum of its proper divisors (223344430814).

255250778056 is a wasteful number, since it uses less digits than its factorization.

255250778056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31906347263 (or 31906347259 counting only the distinct ones).

The product of its (nonzero) digits is 5880000, while the sum is 52.

The spelling of 255250778056 in words is "two hundred fifty-five billion, two hundred fifty million, seven hundred seventy-eight thousand, fifty-six".