525697 has 2 divisors, whose sum is σ = 525698. Its totient is φ = 525696.

The previous prime is 525677. The next prime is 525709. The reversal of 525697 is 796525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524176 + 1521 = 724^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 525697 - 2¹⁹ = 1409 is a prime.

525697 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (525607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262848 + 262849.

It is an arithmetic number, because the mean of its divisors is an integer number (262849).

2⁵²⁵⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

525697 is a deficient number, since it is larger than the sum of its proper divisors (1).

525697 is an equidigital number, since it uses as much as digits as its factorization.

525697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 525697 is about 725.0496534721. The cubic root of 525697 is about 80.7071168241.

The spelling of 525697 in words is "five hundred twenty-five thousand, six hundred ninety-seven".