6720725 has 12 divisors (see below), whose sum is σ = 9091680. Its totient is φ = 4887600.

The previous prime is 6720719. The next prime is 6720731. The reversal of 6720725 is 5270276.

It is a happy number.

6720725 is digitally balanced in base 3, 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 (6720719) and next prime (6720731).

It is not a de Polignac number, because 6720725 - 2¹⁰ = 6719701 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 6⁴ + 7⁷ + 2³ + 0 + 7⁸ + 2¹⁷ + 5 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11945 + ... + 12494.

It is an arithmetic number, because the mean of its divisors is an integer number (757640).

Almost surely, 2^6720725 is an apocalyptic number.

It is an amenable number.

6720725 is a deficient number, since it is larger than the sum of its proper divisors (2370955).

6720725 is a wasteful number, since it uses less digits than its factorization.

6720725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24460 (or 24455 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 6720725 is about 2592.4361130026. The cubic root of 6720725 is about 188.7145453340.

The spelling of 6720725 in words is "six million, seven hundred twenty thousand, seven hundred twenty-five".