525406 has 8 divisors (see below), whose sum is σ = 900720. Its totient is φ = 225168.

The previous prime is 525397. The next prime is 525409. The reversal of 525406 is 604525.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525409) by changing a digit.

525406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 18751 + ... + 18778.

It is an arithmetic number, because the mean of its divisors is an integer number (112590).

2⁵²⁵⁴⁰⁶ is an apocalyptic number.

525406 is a deficient number, since it is larger than the sum of its proper divisors (375314).

525406 is a wasteful number, since it uses less digits than its factorization.

525406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37538.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 525406 is about 724.8489497820. The cubic root of 525406 is about 80.6922222455.

The spelling of 525406 in words is "five hundred twenty-five thousand, four hundred six".