255667781259 has 12 divisors (see below), whose sum is σ = 402870443352. Its totient is φ = 154950170400.

The previous prime is 255667781251. The next prime is 255667781279. The reversal of 255667781259 is 952187766552.

255667781259 is a `hidden beast` number, since 2 + 5 + 566 + 7 + 7 + 8 + 12 + 59 = 666.

It is not a de Polignac number, because 255667781259 - 2³ = 255667781251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255667781196 and 255667781205.

It is not an unprimeable number, because it can be changed into a prime (255667781251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1291251322 + ... + 1291251519.

It is an arithmetic number, because the mean of its divisors is an integer number (33572536946).

Almost surely, 2^255667781259 is an apocalyptic number.

255667781259 is a deficient number, since it is larger than the sum of its proper divisors (147202662093).

255667781259 is a wasteful number, since it uses less digits than its factorization.

255667781259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582502858 (or 2582502855 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 63.

The spelling of 255667781259 in words is "two hundred fifty-five billion, six hundred sixty-seven million, seven hundred eighty-one thousand, two hundred fifty-nine".