525001 has 2 divisors, whose sum is σ = 525002. Its totient is φ = 525000.

The previous prime is 524999. The next prime is 525013. The reversal of 525001 is 100525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435600 + 89401 = 660^2 + 299^2 .

It is a cyclic number.

It is not a de Polignac number, because 525001 - 2¹ = 524999 is a prime.

Together with 524999, it forms a pair of twin primes.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (525101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262500 + 262501.

It is an arithmetic number, because the mean of its divisors is an integer number (262501).

2⁵²⁵⁰⁰¹ is an apocalyptic number.

It is an amenable number.

525001 is a deficient number, since it is larger than the sum of its proper divisors (1).

525001 is an equidigital number, since it uses as much as digits as its factorization.

525001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 525001 is about 724.5695273747. The cubic root of 525001 is about 80.6714835212.

Adding to 525001 its reverse (100525), we get a palindrome (625526).

The spelling of 525001 in words is "five hundred twenty-five thousand, one".