2250509 has 2 divisors, whose sum is σ = 2250510. Its totient is φ = 2250508.

The previous prime is 2250503. The next prime is 2250559. The reversal of 2250509 is 9050522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1729225 + 521284 = 1315^2 + 722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2250509 is a prime.

It is a Chen prime.

It is equal to p₁₆₆₁₀₉ and since 2250509 and 166109 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2250503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125254 + 1125255.

It is an arithmetic number, because the mean of its divisors is an integer number (1125255).

2^2250509 is an apocalyptic number.

It is an amenable number.

2250509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2250509 is an equidigital number, since it uses as much as digits as its factorization.

2250509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2250509 is about 1500.1696570722. The cubic root of 2250509 is about 131.0469501311.

The spelling of 2250509 in words is "two million, two hundred fifty thousand, five hundred nine".