257525042 has 8 divisors (see below), whose sum is σ = 392620332. Its totient is φ = 126651600.

The previous prime is 257525041. The next prime is 257525071. The reversal of 257525042 is 240525752.

257525042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 248094001 + 9431041 = 15751^2 + 3071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (257525041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055309 + ... + 1055552.

Almost surely, 2^257525042 is an apocalyptic number.

257525042 is a deficient number, since it is larger than the sum of its proper divisors (135095290).

257525042 is a wasteful number, since it uses less digits than its factorization.

257525042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110924.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 257525042 is about 16047.5867967741. The cubic root of 257525042 is about 636.2187863896.

The spelling of 257525042 in words is "two hundred fifty-seven million, five hundred twenty-five thousand, forty-two".