255145663 has 4 divisors (see below), whose sum is σ = 256858200. Its totient is φ = 253433128.

The previous prime is 255145643. The next prime is 255145691. The reversal of 255145663 is 366541552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255145663 - 2²¹ = 253048511 is a prime.

It is a super-3 number, since 3×255145663³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255145603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856045 + ... + 856342.

It is an arithmetic number, because the mean of its divisors is an integer number (64214550).

Almost surely, 2^255145663 is an apocalyptic number.

255145663 is a deficient number, since it is larger than the sum of its proper divisors (1712537).

255145663 is a wasteful number, since it uses less digits than its factorization.

255145663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712536.

The product of its digits is 108000, while the sum is 37.

The square root of 255145663 is about 15973.2796569771. The cubic root of 255145663 is about 634.2532921989.

The spelling of 255145663 in words is "two hundred fifty-five million, one hundred forty-five thousand, six hundred sixty-three".