257442230557 has 8 divisors (see below), whose sum is σ = 284437452096. Its totient is φ = 231763849152.

The previous prime is 257442230533. The next prime is 257442230599. The reversal of 257442230557 is 755032244752.

It is a happy number.

257442230557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 257442230557 - 2³⁵ = 223082492189 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 (257442240557) 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, 329209623 + ... + 329210404.

It is an arithmetic number, because the mean of its divisors is an integer number (35554681512).

Almost surely, 2^257442230557 is an apocalyptic number.

It is an amenable number.

257442230557 is a deficient number, since it is larger than the sum of its proper divisors (26995221539).

257442230557 is a wasteful number, since it uses less digits than its factorization.

257442230557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658420067.

The product of its (nonzero) digits is 2352000, while the sum is 46.

The spelling of 257442230557 in words is "two hundred fifty-seven billion, four hundred forty-two million, two hundred thirty thousand, five hundred fifty-seven".