257825459368 has 8 divisors (see below), whose sum is σ = 483422736330. Its totient is φ = 128912729680.

The previous prime is 257825459351. The next prime is 257825459413. The reversal of 257825459368 is 863954528752.

It can be written as a sum of positive squares in only one way, i.e., 242440033924 + 15385425444 = 492382^2 + 124038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16114091203 + ... + 16114091218.

Almost surely, 2^257825459368 is an apocalyptic number.

It is an amenable number.

257825459368 is a deficient number, since it is larger than the sum of its proper divisors (225597276962).

257825459368 is a wasteful number, since it uses less digits than its factorization.

257825459368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32228182427 (or 32228182423 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 64.

The spelling of 257825459368 in words is "two hundred fifty-seven billion, eight hundred twenty-five million, four hundred fifty-nine thousand, three hundred sixty-eight".