256630201 has 4 divisors (see below), whose sum is σ = 257920000. Its totient is φ = 255340404.

The previous prime is 256630151. The next prime is 256630219. The reversal of 256630201 is 102036652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256630201 - 2¹¹ = 256628153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256630271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644601 + ... + 644998.

It is an arithmetic number, because the mean of its divisors is an integer number (64480000).

Almost surely, 2^256630201 is an apocalyptic number.

It is an amenable number.

256630201 is a deficient number, since it is larger than the sum of its proper divisors (1289799).

256630201 is a wasteful number, since it uses less digits than its factorization.

256630201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289798.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 256630201 is about 16019.6816759884. The cubic root of 256630201 is about 635.4810259767.

Adding to 256630201 its reverse (102036652), we get a palindrome (358666853).

The spelling of 256630201 in words is "two hundred fifty-six million, six hundred thirty thousand, two hundred one".