252257069 has 2 divisors, whose sum is σ = 252257070. Its totient is φ = 252257068.

The previous prime is 252257059. The next prime is 252257087. The reversal of 252257069 is 960752252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242954569 + 9302500 = 15587^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 252257069 - 2⁸ = 252256813 is a prime.

It is a super-4 number, since 4×252257069⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252257059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126128534 + 126128535.

It is an arithmetic number, because the mean of its divisors is an integer number (126128535).

Almost surely, 2^252257069 is an apocalyptic number.

It is an amenable number.

252257069 is a deficient number, since it is larger than the sum of its proper divisors (1).

252257069 is an equidigital number, since it uses as much as digits as its factorization.

252257069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 252257069 is about 15882.6027149205. The cubic root of 252257069 is about 631.8506672291.

The spelling of 252257069 in words is "two hundred fifty-two million, two hundred fifty-seven thousand, sixty-nine".