255685249 has 2 divisors, whose sum is σ = 255685250. Its totient is φ = 255685248.

The previous prime is 255685231. The next prime is 255685277. The reversal of 255685249 is 942586552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147379600 + 108305649 = 12140^2 + 10407^2 .

It is a cyclic number.

It is not a de Polignac number, because 255685249 - 2¹¹ = 255683201 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 255685199 and 255685208.

It is not a weakly prime, because it can be changed into another prime (255685289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127842624 + 127842625.

It is an arithmetic number, because the mean of its divisors is an integer number (127842625).

Almost surely, 2^255685249 is an apocalyptic number.

It is an amenable number.

255685249 is a deficient number, since it is larger than the sum of its proper divisors (1).

255685249 is an equidigital number, since it uses as much as digits as its factorization.

255685249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 46.

The square root of 255685249 is about 15990.1610060687. The cubic root of 255685249 is about 634.7000869459.

The spelling of 255685249 in words is "two hundred fifty-five million, six hundred eighty-five thousand, two hundred forty-nine".