255403129 has 16 divisors (see below), whose sum is σ = 266494720. Its totient is φ = 244632960.

The previous prime is 255403091. The next prime is 255403151. The reversal of 255403129 is 921304552.

It is a cyclic number.

It is not a de Polignac number, because 255403129 - 2¹⁵ = 255370361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255403129.

It is not an unprimeable number, because it can be changed into a prime (255403199) 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, 386059 + ... + 386719.

It is an arithmetic number, because the mean of its divisors is an integer number (16655920).

Almost surely, 2^255403129 is an apocalyptic number.

It is an amenable number.

255403129 is a deficient number, since it is larger than the sum of its proper divisors (11091591).

255403129 is an equidigital number, since it uses as much as digits as its factorization.

255403129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 255403129 is about 15981.3368965178. The cubic root of 255403129 is about 634.4665609112.

The spelling of 255403129 in words is "two hundred fifty-five million, four hundred three thousand, one hundred twenty-nine".