257823485 has 16 divisors (see below), whose sum is σ = 327507840. Its totient is φ = 194510400.

The previous prime is 257823473. The next prime is 257823493. The reversal of 257823485 is 584328752.

It is not a de Polignac number, because 257823485 - 2⁴ = 257823469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14441 + ... + 26910.

It is an arithmetic number, because the mean of its divisors is an integer number (20469240).

Almost surely, 2^257823485 is an apocalyptic number.

It is an amenable number.

257823485 is a deficient number, since it is larger than the sum of its proper divisors (69684355).

257823485 is a wasteful number, since it uses less digits than its factorization.

257823485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41428.

The product of its digits is 537600, while the sum is 44.

The square root of 257823485 is about 16056.8827921238. The cubic root of 257823485 is about 636.4644605461.

The spelling of 257823485 in words is "two hundred fifty-seven million, eight hundred twenty-three thousand, four hundred eighty-five".