257655325 has 12 divisors (see below), whose sum is σ = 323871508. Its totient is φ = 203299200.

The previous prime is 257655319. The next prime is 257655329. The reversal of 257655325 is 523556752.

It can be written as a sum of positive squares in 6 ways, for example, as 822649 + 256832676 = 907^2 + 16026^2 .

It is not a de Polignac number, because 257655325 - 2¹³ = 257647133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257655329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68766 + ... + 72415.

Almost surely, 2^257655325 is an apocalyptic number.

257655325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

257655325 is a deficient number, since it is larger than the sum of its proper divisors (66216183).

257655325 is a wasteful number, since it uses less digits than its factorization.

257655325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141264 (or 141259 counting only the distinct ones).

The product of its digits is 315000, while the sum is 40.

The square root of 257655325 is about 16051.6455542726. The cubic root of 257655325 is about 636.3260568872.

The spelling of 257655325 in words is "two hundred fifty-seven million, six hundred fifty-five thousand, three hundred twenty-five".