305120425 has 12 divisors (see below), whose sum is σ = 379552716. Its totient is φ = 243320000.

The previous prime is 305120377. The next prime is 305120443. The reversal of 305120425 is 524021503.

It can be written as a sum of positive squares in 6 ways, for example, as 22477081 + 282643344 = 4741^2 + 16812^2 .

It is not a de Polignac number, because 305120425 - 2¹¹ = 305118377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305120396 and 305120405.

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, 11326 + ... + 27175.

It is an arithmetic number, because the mean of its divisors is an integer number (31629393).

Almost surely, 2^305120425 is an apocalyptic number.

It is an amenable number.

305120425 is a deficient number, since it is larger than the sum of its proper divisors (74432291).

305120425 is a wasteful number, since it uses less digits than its factorization.

305120425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38828 (or 38823 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 305120425 is about 17467.6966140359. The cubic root of 305120425 is about 673.2201302735.

Adding to 305120425 its reverse (524021503), we get a palindrome (829141928).

The spelling of 305120425 in words is "three hundred five million, one hundred twenty thousand, four hundred twenty-five".