625664201 has 2 divisors, whose sum is σ = 625664202. Its totient is φ = 625664200.

The previous prime is 625664189. The next prime is 625664257. The reversal of 625664201 is 102466526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520068025 + 105596176 = 22805^2 + 10276^2 .

It is a cyclic number.

It is not a de Polignac number, because 625664201 - 2¹⁰ = 625663177 is a prime.

It is not a weakly prime, because it can be changed into another prime (625660201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312832100 + 312832101.

It is an arithmetic number, because the mean of its divisors is an integer number (312832101).

Almost surely, 2^625664201 is an apocalyptic number.

It is an amenable number.

625664201 is a deficient number, since it is larger than the sum of its proper divisors (1).

625664201 is an equidigital number, since it uses as much as digits as its factorization.

625664201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 625664201 is about 25013.2804925703. The cubic root of 625664201 is about 855.2907375080.

The spelling of 625664201 in words is "six hundred twenty-five million, six hundred sixty-four thousand, two hundred one".