257541266 has 4 divisors (see below), whose sum is σ = 386311902. Its totient is φ = 128770632.

The previous prime is 257541259. The next prime is 257541269. The reversal of 257541266 is 662145752.

257541266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 142301041 + 115240225 = 11929^2 + 10735^2 .

It is not an unprimeable number, because it can be changed into a prime (257541269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64385315 + ... + 64385318.

Almost surely, 2^257541266 is an apocalyptic number.

257541266 is a deficient number, since it is larger than the sum of its proper divisors (128770636).

257541266 is a wasteful number, since it uses less digits than its factorization.

257541266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128770635.

The product of its digits is 100800, while the sum is 38.

The square root of 257541266 is about 16048.0922853777. The cubic root of 257541266 is about 636.2321466396.

The spelling of 257541266 in words is "two hundred fifty-seven million, five hundred forty-one thousand, two hundred sixty-six".