257886325 has 6 divisors (see below), whose sum is σ = 319779074. Its totient is φ = 206309040.

The previous prime is 257886323. The next prime is 257886341. The reversal of 257886325 is 523688752.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 636804 + 257249521 = 798^2 + 16039^2 .

It is not a de Polignac number, because 257886325 - 2¹ = 257886323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257886323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5157702 + ... + 5157751.

Almost surely, 2^257886325 is an apocalyptic number.

257886325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

257886325 is a deficient number, since it is larger than the sum of its proper divisors (61892749).

257886325 is a wasteful number, since it uses less digits than its factorization.

257886325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10315463 (or 10315458 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 257886325 is about 16058.8394661632. The cubic root of 257886325 is about 636.5161654011.

The spelling of 257886325 in words is "two hundred fifty-seven million, eight hundred eighty-six thousand, three hundred twenty-five".