6629725 has 12 divisors (see below), whose sum is σ = 8252820. Its totient is φ = 5283200.

The previous prime is 6629713. The next prime is 6629729. The reversal of 6629725 is 5279266.

It can be written as a sum of positive squares in 6 ways, for example, as 45369 + 6584356 = 213^2 + 2566^2 .

It is not a de Polignac number, because 6629725 - 2⁹ = 6629213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629729) 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, 12465 + ... + 12985.

It is an arithmetic number, because the mean of its divisors is an integer number (687735).

Almost surely, 2^6629725 is an apocalyptic number.

It is an amenable number.

6629725 is a deficient number, since it is larger than the sum of its proper divisors (1623095).

6629725 is a wasteful number, since it uses less digits than its factorization.

6629725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1035 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 6629725 is about 2574.8252367879. The cubic root of 6629725 is about 187.8589272895.

It can be divided in two parts, 66 and 29725, that added together give a cube (29791 = 31³).

The spelling of 6629725 in words is "six million, six hundred twenty-nine thousand, seven hundred twenty-five".