252265609 has 2 divisors, whose sum is σ = 252265610. Its totient is φ = 252265608.

The previous prime is 252265553. The next prime is 252265613. The reversal of 252265609 is 906562252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131331600 + 120934009 = 11460^2 + 10997^2 .

It is a cyclic number.

It is not a de Polignac number, because 252265609 - 2¹⁷ = 252134537 is a prime.

It is not a weakly prime, because it can be changed into another prime (252235609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126132804 + 126132805.

It is an arithmetic number, because the mean of its divisors is an integer number (126132805).

Almost surely, 2^252265609 is an apocalyptic number.

It is an amenable number.

252265609 is a deficient number, since it is larger than the sum of its proper divisors (1).

252265609 is an equidigital number, since it uses as much as digits as its factorization.

252265609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 252265609 is about 15882.8715602689. The cubic root of 252265609 is about 631.8577974473.

The spelling of 252265609 in words is "two hundred fifty-two million, two hundred sixty-five thousand, six hundred nine".