257114785 has 8 divisors (see below), whose sum is σ = 312883776. Its totient is φ = 202794480.

The previous prime is 257114779. The next prime is 257114843. The reversal of 257114785 is 587411752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 257114785 - 2³ = 257114777 is a prime.

It is a super-2 number, since 2×257114785² = 132216025331192450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 361779 + ... + 362488.

It is an arithmetic number, because the mean of its divisors is an integer number (39110472).

Almost surely, 2^257114785 is an apocalyptic number.

It is an amenable number.

257114785 is a deficient number, since it is larger than the sum of its proper divisors (55768991).

257114785 is an equidigital number, since it uses as much as digits as its factorization.

257114785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724343.

The product of its digits is 78400, while the sum is 40.

The square root of 257114785 is about 16034.7991880160. The cubic root of 257114785 is about 635.8807585017.

The spelling of 257114785 in words is "two hundred fifty-seven million, one hundred fourteen thousand, seven hundred eighty-five".