257280675 has 24 divisors (see below), whose sum is σ = 427305984. Its totient is φ = 136592160.

The previous prime is 257280649. The next prime is 257280707. The reversal of 257280675 is 576082752.

It is not a de Polignac number, because 257280675 - 2¹⁰ = 257279651 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9034 + ... + 24416.

It is an arithmetic number, because the mean of its divisors is an integer number (17804416).

Almost surely, 2^257280675 is an apocalyptic number.

257280675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

257280675 is a deficient number, since it is larger than the sum of its proper divisors (170025309).

257280675 is a wasteful number, since it uses less digits than its factorization.

257280675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15619 (or 15614 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 257280675 is about 16039.9711658095. The cubic root of 257280675 is about 636.0174854771.

The spelling of 257280675 in words is "two hundred fifty-seven million, two hundred eighty thousand, six hundred seventy-five".