257253599 has 2 divisors, whose sum is σ = 257253600. Its totient is φ = 257253598.

The previous prime is 257253541. The next prime is 257253611. The reversal of 257253599 is 995352752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257253599 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 (257253499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128626799 + 128626800.

It is an arithmetic number, because the mean of its divisors is an integer number (128626800).

Almost surely, 2^257253599 is an apocalyptic number.

257253599 is a deficient number, since it is larger than the sum of its proper divisors (1).

257253599 is an equidigital number, since it uses as much as digits as its factorization.

257253599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 850500, while the sum is 47.

The square root of 257253599 is about 16039.1271271226. The cubic root of 257253599 is about 635.9951733808.

The spelling of 257253599 in words is "two hundred fifty-seven million, two hundred fifty-three thousand, five hundred ninety-nine".