257425430 has 16 divisors (see below), whose sum is σ = 483512544. Its totient is φ = 98493120.

The previous prime is 257425423. The next prime is 257425447. The reversal of 257425430 is 34524752.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559391 + ... + 559850.

It is an arithmetic number, because the mean of its divisors is an integer number (30219534).

Almost surely, 2^257425430 is an apocalyptic number.

257425430 is a deficient number, since it is larger than the sum of its proper divisors (226087114).

257425430 is a wasteful number, since it uses less digits than its factorization.

257425430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119271.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 257425430 is about 16044.4828523702. The cubic root of 257425430 is about 636.1367449200.

The spelling of 257425430 in words is "two hundred fifty-seven million, four hundred twenty-five thousand, four hundred thirty".