305320425 has 48 divisors (see below), whose sum is σ = 547018560. Its totient is φ = 149667840.

The previous prime is 305320409. The next prime is 305320427. The reversal of 305320425 is 524023503.

It is not a de Polignac number, because 305320425 - 2⁴ = 305320409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 305320395 and 305320404.

It is not an unprimeable number, because it can be changed into a prime (305320427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52041 + ... + 57609.

It is an arithmetic number, because the mean of its divisors is an integer number (11396220).

Almost surely, 2^305320425 is an apocalyptic number.

It is an amenable number.

305320425 is a deficient number, since it is larger than the sum of its proper divisors (241698135).

305320425 is a wasteful number, since it uses less digits than its factorization.

305320425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642 (or 5637 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 305320425 is about 17473.4205294785. The cubic root of 305320425 is about 673.3671920093.

Adding to 305320425 its reverse (524023503), we get a palindrome (829343928).

The spelling of 305320425 in words is "three hundred five million, three hundred twenty thousand, four hundred twenty-five".