525829 has 4 divisors (see below), whose sum is σ = 527500. Its totient is φ = 524160.

The previous prime is 525817. The next prime is 525839. The reversal of 525829 is 928525.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72900 + 452929 = 270^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 525829 - 2¹³ = 517637 is a prime.

It is a super-2 number, since 2×525829² = 552992274482, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5² + 2 + 8⁴ + 5⁸ + 2¹⁷ + 9 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525809) 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 in 3 ways as a sum of consecutive naturals, for example, 204 + ... + 1045.

It is an arithmetic number, because the mean of its divisors is an integer number (131875).

2⁵²⁵⁸²⁹ is an apocalyptic number.

It is an amenable number.

525829 is a deficient number, since it is larger than the sum of its proper divisors (1671).

525829 is a wasteful number, since it uses less digits than its factorization.

525829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670.

The product of its digits is 7200, while the sum is 31.

The square root of 525829 is about 725.1406760071. The cubic root of 525829 is about 80.7138713157.

The spelling of 525829 in words is "five hundred twenty-five thousand, eight hundred twenty-nine".