648725 has 24 divisors (see below), whose sum is σ = 1005888. Its totient is φ = 403200.

The previous prime is 648719. The next prime is 648731. The reversal of 648725 is 527846.

648725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (648719) and next prime (648731).

It is not a de Polignac number, because 648725 - 2⁴ = 648709 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 648691 and 648700.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648725.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1757 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (41912).

2⁶⁴⁸⁷²⁵ is an apocalyptic number.

It is an amenable number.

648725 is a deficient number, since it is larger than the sum of its proper divisors (357163).

648725 is a wasteful number, since it uses less digits than its factorization.

648725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 360 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 648725 is about 805.4346652585. The cubic root of 648725 is about 86.5672347499.

The spelling of 648725 in words is "six hundred forty-eight thousand, seven hundred twenty-five".