30039425 has 24 divisors (see below), whose sum is σ = 42481656. Its totient is φ = 20874240.

The previous prime is 30039421. The next prime is 30039431. The reversal of 30039425 is 52493003.

It can be written as a sum of positive squares in 12 ways, for example, as 8202496 + 21836929 = 2864^2 + 4673^2 .

It is not a de Polignac number, because 30039425 - 2² = 30039421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30039394 and 30039403.

It is not an unprimeable number, because it can be changed into a prime (30039421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2807 + ... + 8243.

It is an arithmetic number, because the mean of its divisors is an integer number (1770069).

Almost surely, 2^30039425 is an apocalyptic number.

It is an amenable number.

30039425 is a deficient number, since it is larger than the sum of its proper divisors (12442231).

30039425 is a wasteful number, since it uses less digits than its factorization.

30039425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477 (or 5472 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 30039425 is about 5480.8233870469. The cubic root of 30039425 is about 310.8593050595.

The spelling of 30039425 in words is "thirty million, thirty-nine thousand, four hundred twenty-five".