668525201 has 2 divisors, whose sum is σ = 668525202. Its totient is φ = 668525200.

The previous prime is 668525189. The next prime is 668525239. The reversal of 668525201 is 102525866.

668525201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476286976 + 192238225 = 21824^2 + 13865^2 .

It is a cyclic number.

It is not a de Polignac number, because 668525201 - 2¹⁴ = 668508817 is a prime.

It is not a weakly prime, because it can be changed into another prime (668525251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334262600 + 334262601.

It is an arithmetic number, because the mean of its divisors is an integer number (334262601).

Almost surely, 2^668525201 is an apocalyptic number.

It is an amenable number.

668525201 is a deficient number, since it is larger than the sum of its proper divisors (1).

668525201 is an equidigital number, since it uses as much as digits as its factorization.

668525201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 668525201 is about 25855.8542887293. The cubic root of 668525201 is about 874.3915011763.

The spelling of 668525201 in words is "six hundred sixty-eight million, five hundred twenty-five thousand, two hundred one".