254985217 has 2 divisors, whose sum is σ = 254985218. Its totient is φ = 254985216.

The previous prime is 254985209. The next prime is 254985223. The reversal of 254985217 is 712589452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213627456 + 41357761 = 14616^2 + 6431^2 .

It is a cyclic number.

It is not a de Polignac number, because 254985217 - 2³ = 254985209 is a prime.

It is not a weakly prime, because it can be changed into another prime (254986217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127492608 + 127492609.

It is an arithmetic number, because the mean of its divisors is an integer number (127492609).

Almost surely, 2^254985217 is an apocalyptic number.

It is an amenable number.

254985217 is a deficient number, since it is larger than the sum of its proper divisors (1).

254985217 is an equidigital number, since it uses as much as digits as its factorization.

254985217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The square root of 254985217 is about 15968.2565422779. The cubic root of 254985217 is about 634.1203162078.

The spelling of 254985217 in words is "two hundred fifty-four million, nine hundred eighty-five thousand, two hundred seventeen".