30040025 has 6 divisors (see below), whose sum is σ = 37249662. Its totient is φ = 24032000.

The previous prime is 30040013. The next prime is 30040057. The reversal of 30040025 is 52004003.

It can be written as a sum of positive squares in 3 ways, for example, as 1449616 + 28590409 = 1204^2 + 5347^2 .

It is not a de Polignac number, because 30040025 - 2⁴ = 30040009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30039991 and 30040009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600776 + ... + 600825.

It is an arithmetic number, because the mean of its divisors is an integer number (6208277).

Almost surely, 2^30040025 is an apocalyptic number.

It is an amenable number.

30040025 is a deficient number, since it is larger than the sum of its proper divisors (7209637).

30040025 is a wasteful number, since it uses less digits than its factorization.

30040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201611 (or 1201606 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 30040025 is about 5480.8781230748. The cubic root of 30040025 is about 310.8613747212.

Adding to 30040025 its reverse (52004003), we get a palindrome (82044028).

The spelling of 30040025 in words is "thirty million, forty thousand, twenty-five".