257805325353 has 16 divisors (see below), whose sum is σ = 344323203840. Its totient is φ = 171578927184.

The previous prime is 257805325303. The next prime is 257805325357. The reversal of 257805325353 is 353523508752.

It is not a de Polignac number, because 257805325353 - 2⁸ = 257805325097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (257805325357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19057450 + ... + 19070972.

It is an arithmetic number, because the mean of its divisors is an integer number (21520200240).

Almost surely, 2^257805325353 is an apocalyptic number.

It is an amenable number.

257805325353 is a deficient number, since it is larger than the sum of its proper divisors (86517878487).

257805325353 is a wasteful number, since it uses less digits than its factorization.

257805325353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23828.

The product of its (nonzero) digits is 3780000, while the sum is 48.

The spelling of 257805325353 in words is "two hundred fifty-seven billion, eight hundred five million, three hundred twenty-five thousand, three hundred fifty-three".