30005425 has 18 divisors (see below), whose sum is σ = 39533618. Its totient is φ = 22586880.

The previous prime is 30005387. The next prime is 30005429. The reversal of 30005425 is 52450003.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 8928144 + 21077281 = 2988^2 + 4591^2 .

It is not a de Polignac number, because 30005425 - 2²³ = 21616817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30005429) 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 17 ways as a sum of consecutive naturals, for example, 5149 + ... + 9301.

Almost surely, 2^30005425 is an apocalyptic number.

It is an amenable number.

30005425 is a deficient number, since it is larger than the sum of its proper divisors (9528193).

30005425 is a wasteful number, since it uses less digits than its factorization.

30005425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197 (or 4175 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 30005425 is about 5477.7207851441. The cubic root of 30005425 is about 310.7419791736.

Adding to 30005425 its reverse (52450003), we get a palindrome (82455428).

The spelling of 30005425 in words is "thirty million, five thousand, four hundred twenty-five".