256103825 has 12 divisors (see below), whose sum is σ = 326152860. Its totient is φ = 199344960.

The previous prime is 256103777. The next prime is 256103857. The reversal of 256103825 is 528301652.

It can be written as a sum of positive squares in 6 ways, for example, as 71824 + 256032001 = 268^2 + 16001^2 .

It is not a de Polignac number, because 256103825 - 2⁶ = 256103761 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 256103791 and 256103800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137510 + ... + 139359.

It is an arithmetic number, because the mean of its divisors is an integer number (27179405).

Almost surely, 2^256103825 is an apocalyptic number.

256103825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256103825 is a deficient number, since it is larger than the sum of its proper divisors (70049035).

256103825 is a wasteful number, since it uses less digits than its factorization.

256103825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276916 (or 276911 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 256103825 is about 16003.2442023485. The cubic root of 256103825 is about 635.0462487240.

The spelling of 256103825 in words is "two hundred fifty-six million, one hundred three thousand, eight hundred twenty-five".