250030009 has 2 divisors, whose sum is σ = 250030010. Its totient is φ = 250030008.

The previous prime is 250030007. The next prime is 250030021. The reversal of 250030009 is 900030052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225000000 + 25030009 = 15000^2 + 5003^2 .

It is a cyclic number.

It is not a de Polignac number, because 250030009 - 2¹ = 250030007 is a prime.

Together with 250030007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (250030007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125015004 + 125015005.

It is an arithmetic number, because the mean of its divisors is an integer number (125015005).

Almost surely, 2^250030009 is an apocalyptic number.

It is an amenable number.

250030009 is a deficient number, since it is larger than the sum of its proper divisors (1).

250030009 is an equidigital number, since it uses as much as digits as its factorization.

250030009 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 250030009 is about 15812.3372402691. The cubic root of 250030009 is about 629.9857299195.

The spelling of 250030009 in words is "two hundred fifty million, thirty thousand, nine".