252605237 has 2 divisors, whose sum is σ = 252605238. Its totient is φ = 252605236.

The previous prime is 252605233. The next prime is 252605299. The reversal of 252605237 is 732506252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212168356 + 40436881 = 14566^2 + 6359^2 .

It is a cyclic number.

It is not a de Polignac number, because 252605237 - 2² = 252605233 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252605233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126302618 + 126302619.

It is an arithmetic number, because the mean of its divisors is an integer number (126302619).

Almost surely, 2^252605237 is an apocalyptic number.

It is an amenable number.

252605237 is a deficient number, since it is larger than the sum of its proper divisors (1).

252605237 is an equidigital number, since it uses as much as digits as its factorization.

252605237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 252605237 is about 15893.5596075895. The cubic root of 252605237 is about 632.1412293537.

The spelling of 252605237 in words is "two hundred fifty-two million, six hundred five thousand, two hundred thirty-seven".