256625485 has 8 divisors (see below), whose sum is σ = 308158200. Its totient is φ = 205161984.

The previous prime is 256625443. The next prime is 256625497. The reversal of 256625485 is 584526652.

It can be written as a sum of positive squares in 4 ways, for example, as 18818244 + 237807241 = 4338^2 + 15421^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 256625485 - 2⁷ = 256625357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8760 + ... + 24289.

It is an arithmetic number, because the mean of its divisors is an integer number (38519775).

Almost surely, 2^256625485 is an apocalyptic number.

It is an amenable number.

256625485 is a deficient number, since it is larger than the sum of its proper divisors (51532715).

256625485 is a wasteful number, since it uses less digits than its factorization.

256625485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34607.

The product of its digits is 576000, while the sum is 43.

The square root of 256625485 is about 16019.5344813762. The cubic root of 256625485 is about 635.4771332849.

The spelling of 256625485 in words is "two hundred fifty-six million, six hundred twenty-five thousand, four hundred eighty-five".