254904509 has 2 divisors, whose sum is σ = 254904510. Its totient is φ = 254904508.

The previous prime is 254904499. The next prime is 254904583. The reversal of 254904509 is 905409452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185232100 + 69672409 = 13610^2 + 8347^2 .

It is a cyclic number.

It is not a de Polignac number, because 254904509 - 2⁴ = 254904493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254934509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127452254 + 127452255.

It is an arithmetic number, because the mean of its divisors is an integer number (127452255).

Almost surely, 2^254904509 is an apocalyptic number.

It is an amenable number.

254904509 is a deficient number, since it is larger than the sum of its proper divisors (1).

254904509 is an equidigital number, since it uses as much as digits as its factorization.

254904509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 254904509 is about 15965.7292035159. The cubic root of 254904509 is about 634.0534051614.

The spelling of 254904509 in words is "two hundred fifty-four million, nine hundred four thousand, five hundred nine".