257488253 has 8 divisors (see below), whose sum is σ = 281104896. Its totient is φ = 233906400.

The previous prime is 257488249. The next prime is 257488267. The reversal of 257488253 is 352884752.

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

It is a cyclic number.

It is not a de Polignac number, because 257488253 - 2² = 257488249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257488853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8225 + ... + 24137.

It is an arithmetic number, because the mean of its divisors is an integer number (35138112).

Almost surely, 2^257488253 is an apocalyptic number.

It is an amenable number.

257488253 is a deficient number, since it is larger than the sum of its proper divisors (23616643).

257488253 is a wasteful number, since it uses less digits than its factorization.

257488253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17395.

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

The square root of 257488253 is about 16046.4405087234. The cubic root of 257488253 is about 636.1884890544.

The spelling of 257488253 in words is "two hundred fifty-seven million, four hundred eighty-eight thousand, two hundred fifty-three".