257048657285 has 32 divisors (see below), whose sum is σ = 360125913600. Its totient is φ = 176062177536.

The previous prime is 257048657273. The next prime is 257048657291. The reversal of 257048657285 is 582756840752.

It is not a de Polignac number, because 257048657285 - 2⁴ = 257048657269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1436717 + ... + 1605693.

It is an arithmetic number, because the mean of its divisors is an integer number (11253934800).

Almost surely, 2^257048657285 is an apocalyptic number.

It is an amenable number.

257048657285 is a deficient number, since it is larger than the sum of its proper divisors (103077256315).

257048657285 is an equidigital number, since it uses as much as digits as its factorization.

257048657285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169890 (or 169876 counting only the distinct ones).

The product of its (nonzero) digits is 37632000, while the sum is 59.

The spelling of 257048657285 in words is "two hundred fifty-seven billion, forty-eight million, six hundred fifty-seven thousand, two hundred eighty-five".