525018 has 32 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 157248.

The previous prime is 525017. The next prime is 525029. The reversal of 525018 is 810525.

It is an alternating number because its digits alternate between odd and even.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 524985 and 525003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4071 + ... + 4197.

It is an arithmetic number, because the mean of its divisors is an integer number (36288).

2⁵²⁵⁰¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580608).

525018 is an abundant number, since it is smaller than the sum of its proper divisors (636198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525018 is a wasteful number, since it uses less digits than its factorization.

525018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 525018 is about 724.5812583831. The cubic root of 525018 is about 80.6723542499.

The spelling of 525018 in words is "five hundred twenty-five thousand, eighteen".