647925 has 24 divisors (see below), whose sum is σ = 1098144. Its totient is φ = 336960.

The previous prime is 647917. The next prime is 647951. The reversal of 647925 is 529746.

It is not a de Polignac number, because 647925 - 2³ = 647917 is a prime.

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 647925.

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, 3894 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (45756).

2⁶⁴⁷⁹²⁵ is an apocalyptic number.

It is an amenable number.

647925 is a deficient number, since it is larger than the sum of its proper divisors (450219).

647925 is a wasteful number, since it uses less digits than its factorization.

647925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 224 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 647925 is about 804.9378858024. The cubic root of 647925 is about 86.5316355490.

The spelling of 647925 in words is "six hundred forty-seven thousand, nine hundred twenty-five".