256104225 has 36 divisors (see below), whose sum is σ = 494002236. Its totient is φ = 126080640.

The previous prime is 256104223. The next prime is 256104239. The reversal of 256104225 is 522401652.

256104225 is a `hidden beast` number, since 2 + 5 + 610 + 42 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 92852496 + 163251729 = 9636^2 + 12777^2 .

It is not a de Polignac number, because 256104225 - 2¹ = 256104223 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256104223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40854 + ... + 46703.

Almost surely, 2^256104225 is an apocalyptic number.

256104225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256104225 is a deficient number, since it is larger than the sum of its proper divisors (237898011).

256104225 is a wasteful number, since it uses less digits than its factorization.

256104225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87586 (or 87578 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 256104225 is about 16003.2566998096. The cubic root of 256104225 is about 635.0465793430.

Adding to 256104225 its reverse (522401652), we get a palindrome (778505877).

The spelling of 256104225 in words is "two hundred fifty-six million, one hundred four thousand, two hundred twenty-five".