525729 has 8 divisors (see below), whose sum is σ = 723712. Its totient is φ = 339120.

The previous prime is 525727. The next prime is 525731. The reversal of 525729 is 927525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (525727) and next prime (525731).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 525729 - 2¹ = 525727 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 525696 and 525705.

It is not an unprimeable number, because it can be changed into a prime (525727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734 + ... + 2919.

It is an arithmetic number, because the mean of its divisors is an integer number (90464).

2⁵²⁵⁷²⁹ is an apocalyptic number.

It is an amenable number.

525729 is a deficient number, since it is larger than the sum of its proper divisors (197983).

525729 is a wasteful number, since it uses less digits than its factorization.

525729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5687.

The product of its digits is 6300, while the sum is 30.

The square root of 525729 is about 725.0717205905. The cubic root of 525729 is about 80.7087543804.

The spelling of 525729 in words is "five hundred twenty-five thousand, seven hundred twenty-nine".