348725509 has 6 divisors (see below), whose sum is σ = 383309990. Its totient is φ = 317023080.

The previous prime is 348725501. The next prime is 348725521. The reversal of 348725509 is 905527843.

It can be written as a sum of positive squares in only one way, i.e., 280663009 + 68062500 = 16753^2 + 8250^2 .

It is not a de Polignac number, because 348725509 - 2³ = 348725501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (348725501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1440894 + ... + 1441135.

Almost surely, 2^348725509 is an apocalyptic number.

It is an amenable number.

348725509 is a deficient number, since it is larger than the sum of its proper divisors (34584481).

348725509 is a wasteful number, since it uses less digits than its factorization.

348725509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882051 (or 2882040 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 348725509 is about 18674.1936639845. The cubic root of 348725509 is about 703.8734310221.

The spelling of 348725509 in words is "three hundred forty-eight million, seven hundred twenty-five thousand, five hundred nine".