257145454286 has 16 divisors (see below), whose sum is σ = 449817122400. Its totient is φ = 110205194400.

The previous prime is 257145454271. The next prime is 257145454337. The reversal of 257145454286 is 682454541752.

It is a super-2 number, since 2×257145454286² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187423115 + ... + 187424486.

It is an arithmetic number, because the mean of its divisors is an integer number (28113570150).

Almost surely, 2^257145454286 is an apocalyptic number.

257145454286 is a deficient number, since it is larger than the sum of its proper divisors (192671668114).

257145454286 is an equidigital number, since it uses as much as digits as its factorization.

257145454286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374847624 (or 374847610 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 53.

The spelling of 257145454286 in words is "two hundred fifty-seven billion, one hundred forty-five million, four hundred fifty-four thousand, two hundred eighty-six".