255420289 has 8 divisors (see below), whose sum is σ = 257725440. Its totient is φ = 253125600.

The previous prime is 255420251. The next prime is 255420337. The reversal of 255420289 is 982024552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255420289 - 2⁷ = 255420161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255420229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51292 + ... + 56050.

It is an arithmetic number, because the mean of its divisors is an integer number (32215680).

Almost surely, 2^255420289 is an apocalyptic number.

It is an amenable number.

255420289 is a deficient number, since it is larger than the sum of its proper divisors (2305151).

255420289 is a wasteful number, since it uses less digits than its factorization.

255420289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 255420289 is about 15981.8737637362. The cubic root of 255420289 is about 634.4807700850.

The spelling of 255420289 in words is "two hundred fifty-five million, four hundred twenty thousand, two hundred eighty-nine".