257802580052 has 12 divisors (see below), whose sum is σ = 453762345876. Its totient is φ = 128156195520.

The previous prime is 257802580043. The next prime is 257802580099. The reversal of 257802580052 is 250085208752.

It can be written as a sum of positive squares in 2 ways, for example, as 151503106756 + 106299473296 = 389234^2 + 326036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257802579985 and 257802580012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186272849 + ... + 186274232.

It is an arithmetic number, because the mean of its divisors is an integer number (37813528823).

Almost surely, 2^257802580052 is an apocalyptic number.

It is an amenable number.

257802580052 is a deficient number, since it is larger than the sum of its proper divisors (195959765824).

257802580052 is a wasteful number, since it uses less digits than its factorization.

257802580052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372547258 (or 372547256 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 44.

The spelling of 257802580052 in words is "two hundred fifty-seven billion, eight hundred two million, five hundred eighty thousand, fifty-two".