250015009 has 2 divisors, whose sum is σ = 250015010. Its totient is φ = 250015008.

The previous prime is 250014983. The next prime is 250015049. The reversal of 250015009 is 900510052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194184225 + 55830784 = 13935^2 + 7472^2 .

It is a cyclic number.

It is not a de Polignac number, because 250015009 - 2⁹ = 250014497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (250015049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125007504 + 125007505.

It is an arithmetic number, because the mean of its divisors is an integer number (125007505).

Almost surely, 2^250015009 is an apocalyptic number.

It is an amenable number.

250015009 is a deficient number, since it is larger than the sum of its proper divisors (1).

250015009 is an equidigital number, since it uses as much as digits as its factorization.

250015009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 250015009 is about 15811.8629199725. The cubic root of 250015009 is about 629.9731314652.

The spelling of 250015009 in words is "two hundred fifty million, fifteen thousand, nine".