257057545604 has 12 divisors (see below), whose sum is σ = 449895881484. Its totient is φ = 128515865184.

The previous prime is 257057545603. The next prime is 257057545609. The reversal of 257057545604 is 406545750752.

It can be written as a sum of positive squares in 2 ways, for example, as 57239605504 + 199817940100 = 239248^2 + 447010^2 .

It is not an unprimeable number, because it can be changed into a prime (257057545603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3182027 + ... + 3261810.

It is an arithmetic number, because the mean of its divisors is an integer number (37491323457).

Almost surely, 2^257057545604 is an apocalyptic number.

It is an amenable number.

257057545604 is a deficient number, since it is larger than the sum of its proper divisors (192838335880).

257057545604 is a wasteful number, since it uses less digits than its factorization.

257057545604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453814 (or 6453812 counting only the distinct ones).

The product of its (nonzero) digits is 5880000, while the sum is 50.

The spelling of 257057545604 in words is "two hundred fifty-seven billion, fifty-seven million, five hundred forty-five thousand, six hundred four".