6511625 has 16 divisors (see below), whose sum is σ = 8216208. Its totient is φ = 5152000.

The previous prime is 6511621. The next prime is 6511649. The reversal of 6511625 is 5261156.

6511625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4748041 + 1763584 = 2179^2 + 1328^2 .

It is not a de Polignac number, because 6511625 - 2² = 6511621 is a prime.

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 = 6511594 and 6511603.

It is not an unprimeable number, because it can be changed into a prime (6511621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13895 + ... + 14355.

It is an arithmetic number, because the mean of its divisors is an integer number (513513).

Almost surely, 2^6511625 is an apocalyptic number.

It is an amenable number.

6511625 is a deficient number, since it is larger than the sum of its proper divisors (1704583).

6511625 is a wasteful number, since it uses less digits than its factorization.

6511625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 579 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 6511625 is about 2551.7885884219. The cubic root of 6511625 is about 186.7367491242.

The spelling of 6511625 in words is "six million, five hundred eleven thousand, six hundred twenty-five".