252685859 has 2 divisors, whose sum is σ = 252685860. Its totient is φ = 252685858.

The previous prime is 252685831. The next prime is 252685861. The reversal of 252685859 is 958586252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252685859 is a prime.

Together with 252685861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252685159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126342929 + 126342930.

It is an arithmetic number, because the mean of its divisors is an integer number (126342930).

Almost surely, 2^252685859 is an apocalyptic number.

252685859 is a deficient number, since it is larger than the sum of its proper divisors (1).

252685859 is an equidigital number, since it uses as much as digits as its factorization.

252685859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728000, while the sum is 50.

The square root of 252685859 is about 15896.0957156152. The cubic root of 252685859 is about 632.2084740260.

The spelling of 252685859 in words is "two hundred fifty-two million, six hundred eighty-five thousand, eight hundred fifty-nine".