525040 has 20 divisors (see below), whose sum is σ = 1220904. Its totient is φ = 209984.

The previous prime is 525029. The next prime is 525043. The reversal of 525040 is 40525.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202 + ... + 3361.

2⁵²⁵⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

525040 is an abundant number, since it is smaller than the sum of its proper divisors (695864).

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

525040 is a wasteful number, since it uses less digits than its factorization.

525040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576 (or 6570 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 525040 is about 724.5964394061. The cubic root of 525040 is about 80.6734810475.

Adding to 525040 its reverse (40525), we get a palindrome (565565).

The spelling of 525040 in words is "five hundred twenty-five thousand, forty".