257226066775705 has 16 divisors (see below), whose sum is σ = 308853130526208. Its totient is φ = 205659629496000.

The previous prime is 257226066775679. The next prime is 257226066775753. The reversal of 257226066775705 is 507577660622752.

It is a happy number.

It is not a de Polignac number, because 257226066775705 - 2³¹ = 257223919292057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216757120 + ... + 217940590.

It is an arithmetic number, because the mean of its divisors is an integer number (19303320657888).

Almost surely, 2^{257226066775705} is an apocalyptic number.

It is an amenable number.

257226066775705 is a deficient number, since it is larger than the sum of its proper divisors (51627063750503).

257226066775705 is a wasteful number, since it uses less digits than its factorization.

257226066775705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209048.

The product of its (nonzero) digits is 518616000, while the sum is 67.

The spelling of 257226066775705 in words is "two hundred fifty-seven trillion, two hundred twenty-six billion, sixty-six million, seven hundred seventy-five thousand, seven hundred five".