30000025 has 36 divisors (see below), whose sum is σ = 42251760. Its totient is φ = 20949600.

The previous prime is 30000023. The next prime is 30000037. The reversal of 30000025 is 52000003.

It is not a de Polignac number, because 30000025 - 2¹ = 30000023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29999966 and 30000020.

It is not an unprimeable number, because it can be changed into a prime (30000023) 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 35 ways as a sum of consecutive naturals, for example, 508446 + ... + 508504.

It is an arithmetic number, because the mean of its divisors is an integer number (1173660).

Almost surely, 2^30000025 is an apocalyptic number.

It is an amenable number.

30000025 is a deficient number, since it is larger than the sum of its proper divisors (12251735).

30000025 is a wasteful number, since it uses less digits than its factorization.

30000025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 30000025 is about 5477.2278572285. The cubic root of 30000025 is about 310.7233369074.

Adding to 30000025 its reverse (52000003), we get a palindrome (82000028).

The spelling of 30000025 in words is "thirty million, twenty-five", and thus it is an aban number and an uban number.