257075994 has 64 divisors (see below), whose sum is σ = 619610112. Its totient is φ = 69552000.

The previous prime is 257075971. The next prime is 257075999. The reversal of 257075994 is 499570752.

It is not an unprimeable number, because it can be changed into a prime (257075999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59094 + ... + 63294.

It is an arithmetic number, because the mean of its divisors is an integer number (9681408).

Almost surely, 2^257075994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257075994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309805056).

257075994 is an abundant number, since it is smaller than the sum of its proper divisors (362534118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257075994 is a wasteful number, since it uses less digits than its factorization.

257075994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291.

The product of its (nonzero) digits is 793800, while the sum is 48.

The square root of 257075994 is about 16033.5895544323. The cubic root of 257075994 is about 635.8487783739.

The spelling of 257075994 in words is "two hundred fifty-seven million, seventy-five thousand, nine hundred ninety-four".