256315125 has 32 divisors (see below), whose sum is σ = 465289344. Its totient is φ = 124272000.

The previous prime is 256315109. The next prime is 256315139. The reversal of 256315125 is 521513652.

It is a happy number.

It is not a de Polignac number, because 256315125 - 2⁴ = 256315109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256315092 and 256315101.

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 31 ways as a sum of consecutive naturals, for example, 26944 + ... + 35193.

It is an arithmetic number, because the mean of its divisors is an integer number (14540292).

Almost surely, 2^256315125 is an apocalyptic number.

256315125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256315125 is a deficient number, since it is larger than the sum of its proper divisors (208974219).

256315125 is a wasteful number, since it uses less digits than its factorization.

256315125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62166 (or 62156 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 256315125 is about 16009.8446276034. The cubic root of 256315125 is about 635.2208502888.

Adding to 256315125 its reverse (521513652), we get a palindrome (777828777).

The spelling of 256315125 in words is "two hundred fifty-six million, three hundred fifteen thousand, one hundred twenty-five".