255188869 has 16 divisors (see below), whose sum is σ = 284677120. Its totient is φ = 227162880.

The previous prime is 255188851. The next prime is 255188891. The reversal of 255188869 is 968881552.

It is a cyclic number.

It is not a de Polignac number, because 255188869 - 2⁵ = 255188837 is a prime.

It is a super-2 number, since 2×255188869² = 130242717722998322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255188369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134872 + ... + 136750.

It is an arithmetic number, because the mean of its divisors is an integer number (17792320).

Almost surely, 2^255188869 is an apocalyptic number.

It is an amenable number.

255188869 is a deficient number, since it is larger than the sum of its proper divisors (29488251).

255188869 is a wasteful number, since it uses less digits than its factorization.

255188869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260.

The product of its digits is 1382400, while the sum is 52.

The square root of 255188869 is about 15974.6320458407. The cubic root of 255188869 is about 634.2890913586.

The spelling of 255188869 in words is "two hundred fifty-five million, one hundred eighty-eight thousand, eight hundred sixty-nine".