648625 has 8 divisors (see below), whose sum is σ = 809640. Its totient is φ = 518800.

The previous prime is 648619. The next prime is 648629. The reversal of 648625 is 526846.

It can be written as a sum of positive squares in 4 ways, for example, as 2209 + 646416 = 47^2 + 804^2 .

It is not a de Polignac number, because 648625 - 2³ = 648617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648629) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2470 + ... + 2719.

It is an arithmetic number, because the mean of its divisors is an integer number (101205).

2⁶⁴⁸⁶²⁵ is an apocalyptic number.

It is an amenable number.

648625 is a deficient number, since it is larger than the sum of its proper divisors (161015).

648625 is an equidigital number, since it uses as much as digits as its factorization.

648625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204 (or 5194 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 648625 is about 805.3725845843. The cubic root of 648625 is about 86.5627864509.

The spelling of 648625 in words is "six hundred forty-eight thousand, six hundred twenty-five".