304520425 has 12 divisors (see below), whose sum is σ = 411933456. Its totient is φ = 221469200.

The previous prime is 304520413. The next prime is 304520459. The reversal of 304520425 is 524025403.

It is not a de Polignac number, because 304520425 - 2⁵ = 304520393 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 304520425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 553399 + ... + 553948.

It is an arithmetic number, because the mean of its divisors is an integer number (34327788).

Almost surely, 2^304520425 is an apocalyptic number.

It is an amenable number.

304520425 is a deficient number, since it is larger than the sum of its proper divisors (107413031).

304520425 is a wasteful number, since it uses less digits than its factorization.

304520425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107368 (or 1107363 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 304520425 is about 17450.5136027568. The cubic root of 304520425 is about 672.7785591171.

Adding to 304520425 its reverse (524025403), we get a palindrome (828545828).

The spelling of 304520425 in words is "three hundred four million, five hundred twenty thousand, four hundred twenty-five".