8525213 has 2 divisors, whose sum is σ = 8525214. Its totient is φ = 8525212.

The previous prime is 8525201. The next prime is 8525227. The reversal of 8525213 is 3125258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6980164 + 1545049 = 2642^2 + 1243^2 .

It is a cyclic number.

It is not a de Polignac number, because 8525213 - 2⁶ = 8525149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8525263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4262606 + 4262607.

It is an arithmetic number, because the mean of its divisors is an integer number (4262607).

Almost surely, 2^8525213 is an apocalyptic number.

It is an amenable number.

8525213 is a deficient number, since it is larger than the sum of its proper divisors (1).

8525213 is an equidigital number, since it uses as much as digits as its factorization.

8525213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 8525213 is about 2919.7967395009. The cubic root of 8525213 is about 204.2843417330.

The spelling of 8525213 in words is "eight million, five hundred twenty-five thousand, two hundred thirteen".