256352225 has 12 divisors (see below), whose sum is σ = 318097200. Its totient is φ = 204939600.

The previous prime is 256352221. The next prime is 256352267. The reversal of 256352225 is 522253652.

It is not a de Polignac number, because 256352225 - 2² = 256352221 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 256352191 and 256352200.

It is not an unprimeable number, because it can be changed into a prime (256352221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47726 + ... + 52824.

It is an arithmetic number, because the mean of its divisors is an integer number (26508100).

Almost surely, 2^256352225 is an apocalyptic number.

256352225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256352225 is a deficient number, since it is larger than the sum of its proper divisors (61744975).

256352225 is a wasteful number, since it uses less digits than its factorization.

256352225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7120 (or 7115 counting only the distinct ones).

The product of its digits is 36000, while the sum is 32.

The square root of 256352225 is about 16011.0032477668. The cubic root of 256352225 is about 635.2514968827.

The spelling of 256352225 in words is "two hundred fifty-six million, three hundred fifty-two thousand, two hundred twenty-five".