648525 has 12 divisors (see below), whose sum is σ = 1072352. Its totient is φ = 345840.

The previous prime is 648509. The next prime is 648563. The reversal of 648525 is 525846.

It is not a de Polignac number, because 648525 - 2⁴ = 648509 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648492 and 648501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4249 + ... + 4398.

2⁶⁴⁸⁵²⁵ is an apocalyptic number.

It is an amenable number.

648525 is a deficient number, since it is larger than the sum of its proper divisors (423827).

648525 is a wasteful number, since it uses less digits than its factorization.

648525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8660 (or 8655 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 648525 is about 805.3104991244. The cubic root of 648525 is about 86.5583376947.

The spelling of 648525 in words is "six hundred forty-eight thousand, five hundred twenty-five".