348225509 has 2 divisors, whose sum is σ = 348225510. Its totient is φ = 348225508.

The previous prime is 348225503. The next prime is 348225517. The reversal of 348225509 is 905522843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210163009 + 138062500 = 14497^2 + 11750^2 .

It is a cyclic number.

It is not a de Polignac number, because 348225509 - 2²⁰ = 347176933 is a prime.

It is a super-2 number, since 2×348225509² = 242522010236618162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348225503) 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, 174112754 + 174112755.

It is an arithmetic number, because the mean of its divisors is an integer number (174112755).

Almost surely, 2^348225509 is an apocalyptic number.

It is an amenable number.

348225509 is a deficient number, since it is larger than the sum of its proper divisors (1).

348225509 is an equidigital number, since it uses as much as digits as its factorization.

348225509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 348225509 is about 18660.8014029409. The cubic root of 348225509 is about 703.5368673143.

The spelling of 348225509 in words is "three hundred forty-eight million, two hundred twenty-five thousand, five hundred nine".