30305425 has 12 divisors (see below), whose sum is σ = 37659916. Its totient is φ = 24192000.

The previous prime is 30305423. The next prime is 30305447. The reversal of 30305425 is 52450303.

It can be written as a sum of positive squares in 6 ways, for example, as 1661521 + 28643904 = 1289^2 + 5352^2 .

It is not a de Polignac number, because 30305425 - 2¹ = 30305423 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30305396 and 30305405.

It is not an unprimeable number, because it can be changed into a prime (30305423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14017 + ... + 16033.

Almost surely, 2^30305425 is an apocalyptic number.

It is an amenable number.

30305425 is a deficient number, since it is larger than the sum of its proper divisors (7354491).

30305425 is a wasteful number, since it uses less digits than its factorization.

30305425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 30305425 is about 5505.0363304887. The cubic root of 30305425 is about 311.7741661004.

Adding to 30305425 its reverse (52450303), we get a palindrome (82755728).

The spelling of 30305425 in words is "thirty million, three hundred five thousand, four hundred twenty-five".