257068754 has 4 divisors (see below), whose sum is σ = 385603134. Its totient is φ = 128534376.

The previous prime is 257068733. The next prime is 257068807. The reversal of 257068754 is 457860752.

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., 140968129 + 116100625 = 11873^2 + 10775^2 .

It is a super-2 number, since 2×257068754² = 132168688566225032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64267187 + ... + 64267190.

Almost surely, 2^257068754 is an apocalyptic number.

257068754 is a deficient number, since it is larger than the sum of its proper divisors (128534380).

257068754 is a wasteful number, since it uses less digits than its factorization.

257068754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128534379.

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 257068754 is about 16033.3637768249. The cubic root of 257068754 is about 635.8428092072.

The spelling of 257068754 in words is "two hundred fifty-seven million, sixty-eight thousand, seven hundred fifty-four".