647528925 has 12 divisors (see below), whose sum is σ = 1070581280. Its totient is φ = 345348720.

The previous prime is 647528923. The next prime is 647528927. The reversal of 647528925 is 529825746.

It is an interprime number because it is at equal distance from previous prime (647528923) and next prime (647528927).

It is not a de Polignac number, because 647528925 - 2¹ = 647528923 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647528923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4316785 + ... + 4316934.

Almost surely, 2^647528925 is an apocalyptic number.

It is an amenable number.

647528925 is a deficient number, since it is larger than the sum of its proper divisors (423052355).

647528925 is a wasteful number, since it uses less digits than its factorization.

647528925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633732 (or 8633727 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 647528925 is about 25446.5896536255. The cubic root of 647528925 is about 865.1399976108.

The spelling of 647528925 in words is "six hundred forty-seven million, five hundred twenty-eight thousand, nine hundred twenty-five".