208725001 has 2 divisors, whose sum is σ = 208725002. Its totient is φ = 208725000.

The previous prime is 208724993. The next prime is 208725059. The reversal of 208725001 is 100527802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205205625 + 3519376 = 14325^2 + 1876^2 .

It is a cyclic number.

It is not a de Polignac number, because 208725001 - 2³ = 208724993 is a prime.

It is a super-2 number, since 2×208725001² = 87132252084900002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (208725401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104362500 + 104362501.

It is an arithmetic number, because the mean of its divisors is an integer number (104362501).

Almost surely, 2^208725001 is an apocalyptic number.

It is an amenable number.

208725001 is a deficient number, since it is larger than the sum of its proper divisors (1).

208725001 is an equidigital number, since it uses as much as digits as its factorization.

208725001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 208725001 is about 14447.3181248286. The cubic root of 208725001 is about 593.1868168784.

The spelling of 208725001 in words is "two hundred eight million, seven hundred twenty-five thousand, one".