256226603 has 2 divisors, whose sum is σ = 256226604. Its totient is φ = 256226602.

The previous prime is 256226599. The next prime is 256226681. The reversal of 256226603 is 306622652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256226603 - 2² = 256226599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256226603.

It is not a weakly prime, because it can be changed into another prime (256226683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128113301 + 128113302.

It is an arithmetic number, because the mean of its divisors is an integer number (128113302).

Almost surely, 2^256226603 is an apocalyptic number.

256226603 is a deficient number, since it is larger than the sum of its proper divisors (1).

256226603 is an equidigital number, since it uses as much as digits as its factorization.

256226603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 256226603 is about 16007.0797773985. The cubic root of 256226603 is about 635.1477144113.

The spelling of 256226603 in words is "two hundred fifty-six million, two hundred twenty-six thousand, six hundred three".