257080845 has 16 divisors (see below), whose sum is σ = 470090880. Its totient is φ = 117522624.

The previous prime is 257080841. The next prime is 257080871. The reversal of 257080845 is 548080752.

It is not a de Polignac number, because 257080845 - 2² = 257080841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257080841) 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, 1224090 + ... + 1224299.

It is an arithmetic number, because the mean of its divisors is an integer number (29380680).

Almost surely, 2^257080845 is an apocalyptic number.

It is an amenable number.

257080845 is a deficient number, since it is larger than the sum of its proper divisors (213010035).

257080845 is a wasteful number, since it uses less digits than its factorization.

257080845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448404.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 257080845 is about 16033.7408298875. The cubic root of 257080845 is about 635.8527778177.

The spelling of 257080845 in words is "two hundred fifty-seven million, eighty thousand, eight hundred forty-five".