406525 has 24 divisors (see below), whose sum is σ = 607104. Its totient is φ = 264000.

The previous prime is 406517. The next prime is 406531. The reversal of 406525 is 525604.

It is not a de Polignac number, because 406525 - 2³ = 406517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406496 and 406505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3975 + ... + 4075.

It is an arithmetic number, because the mean of its divisors is an integer number (25296).

2⁴⁰⁶⁵²⁵ is an apocalyptic number.

It is an amenable number.

406525 is a deficient number, since it is larger than the sum of its proper divisors (200579).

406525 is a wasteful number, since it uses less digits than its factorization.

406525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 136 counting only the distinct ones).

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

The square root of 406525 is about 637.5931304523. The cubic root of 406525 is about 74.0791094571.

The spelling of 406525 in words is "four hundred six thousand, five hundred twenty-five".