508225309 has 2 divisors, whose sum is σ = 508225310. Its totient is φ = 508225308.

The previous prime is 508225247. The next prime is 508225327. The reversal of 508225309 is 903522805.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502208100 + 6017209 = 22410^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 508225309 - 2¹⁹ = 507701021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (508225369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254112654 + 254112655.

It is an arithmetic number, because the mean of its divisors is an integer number (254112655).

Almost surely, 2^508225309 is an apocalyptic number.

It is an amenable number.

508225309 is a deficient number, since it is larger than the sum of its proper divisors (1).

508225309 is an equidigital number, since it uses as much as digits as its factorization.

508225309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 508225309 is about 22543.8530202803. The cubic root of 508225309 is about 798.0291638473.

The spelling of 508225309 in words is "five hundred eight million, two hundred twenty-five thousand, three hundred nine".