3525209 has 2 divisors, whose sum is σ = 3525210. Its totient is φ = 3525208.

The previous prime is 3525199. The next prime is 3525229. The reversal of 3525209 is 9025253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2890000 + 635209 = 1700^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 3525209 - 2¹² = 3521113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3525229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1762604 + 1762605.

It is an arithmetic number, because the mean of its divisors is an integer number (1762605).

Almost surely, 2^3525209 is an apocalyptic number.

It is an amenable number.

3525209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3525209 is an equidigital number, since it uses as much as digits as its factorization.

3525209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 3525209 is about 1877.5539938974. The cubic root of 3525209 is about 152.1930977327.

The spelling of 3525209 in words is "three million, five hundred twenty-five thousand, two hundred nine".