256262625 has 24 divisors (see below), whose sum is σ = 461958120. Its totient is φ = 136672800.

The previous prime is 256262621. The next prime is 256262627. The reversal of 256262625 is 526262652.

256262625 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 626 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6561 + 256256064 = 81^2 + 16008^2 .

It is not a de Polignac number, because 256262625 - 2² = 256262621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256262625.

It is not an unprimeable number, because it can be changed into a prime (256262621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112770 + ... + 115019.

It is an arithmetic number, because the mean of its divisors is an integer number (19248255).

Almost surely, 2^256262625 is an apocalyptic number.

256262625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256262625 is a deficient number, since it is larger than the sum of its proper divisors (205695495).

256262625 is a wasteful number, since it uses less digits than its factorization.

256262625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227810 (or 227797 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 256262625 is about 16008.2049274739. The cubic root of 256262625 is about 635.1774774136.

The spelling of 256262625 in words is "two hundred fifty-six million, two hundred sixty-two thousand, six hundred twenty-five".