525140 has 72 divisors (see below), whose sum is σ = 1430016. Its totient is φ = 158400.

The previous prime is 525137. The next prime is 525143. The reversal of 525140 is 41525.

It is an interprime number because it is at equal distance from previous prime (525137) and next prime (525143).

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525140.

It is not an unprimeable number, because it can be changed into a prime (525143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16925 + ... + 16955.

2⁵²⁵¹⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715008).

525140 is an abundant number, since it is smaller than the sum of its proper divisors (904876).

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

525140 is a wasteful number, since it uses less digits than its factorization.

525140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 525140 is about 724.6654400480. The cubic root of 525140 is about 80.6786024579.

Adding to 525140 its reverse (41525), we get a palindrome (566665).

The spelling of 525140 in words is "five hundred twenty-five thousand, one hundred forty".