304135225 has 12 divisors (see below), whose sum is σ = 377394496. Its totient is φ = 243136080.

The previous prime is 304135217. The next prime is 304135229. The reversal of 304135225 is 522531403.

It is not a de Polignac number, because 304135225 - 2³ = 304135217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304135225.

It is not an unprimeable number, because it can be changed into a prime (304135229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41164 + ... + 47986.

Almost surely, 2^304135225 is an apocalyptic number.

It is an amenable number.

304135225 is a deficient number, since it is larger than the sum of its proper divisors (73259271).

304135225 is a wasteful number, since it uses less digits than its factorization.

304135225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616 (or 8611 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 304135225 is about 17439.4731858505. The cubic root of 304135225 is about 672.4947646345.

Adding to 304135225 its reverse (522531403), we get a palindrome (826666628).

The spelling of 304135225 in words is "three hundred four million, one hundred thirty-five thousand, two hundred twenty-five".