30250009 has 2 divisors, whose sum is σ = 30250010. Its totient is φ = 30250008.

The previous prime is 30250001. The next prime is 30250039. The reversal of 30250009 is 90005203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30250000 + 9 = 5500^2 + 3^2 .

It is an emirp because it is prime and its reverse (90005203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30250009 - 2³ = 30250001 is a prime.

It is not a weakly prime, because it can be changed into another prime (30250001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15125004 + 15125005.

It is an arithmetic number, because the mean of its divisors is an integer number (15125005).

Almost surely, 2^30250009 is an apocalyptic number.

It is an amenable number.

30250009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30250009 is an equidigital number, since it uses as much as digits as its factorization.

30250009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 30250009 is about 5500.0008181818. Note that the first 3 decimals coincide. The cubic root of 30250009 is about 311.5840151194.

The spelling of 30250009 in words is "thirty million, two hundred fifty thousand, nine".