255016129 has 4 divisors (see below), whose sum is σ = 255284676. Its totient is φ = 254747584.

The previous prime is 255016123. The next prime is 255016147. The reversal of 255016129 is 921610552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66585600 + 188430529 = 8160^2 + 13727^2 .

It is a cyclic number.

It is not a de Polignac number, because 255016129 - 2³ = 255016121 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 255016129.

It is not an unprimeable number, because it can be changed into a prime (255016121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132844 + ... + 134749.

It is an arithmetic number, because the mean of its divisors is an integer number (63821169).

Almost surely, 2^255016129 is an apocalyptic number.

It is an amenable number.

255016129 is a deficient number, since it is larger than the sum of its proper divisors (268547).

255016129 is an equidigital number, since it uses as much as digits as its factorization.

255016129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268546.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 255016129 is about 15969.2244332654. The cubic root of 255016129 is about 634.1459400922.

The spelling of 255016129 in words is "two hundred fifty-five million, sixteen thousand, one hundred twenty-nine".