7081725 has 72 divisors (see below), whose sum is σ = 14249088. Its totient is φ = 3091200.

The previous prime is 7081709. The next prime is 7081727. The reversal of 7081725 is 5271807.

It is a happy number.

7081725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7081725 - 2⁴ = 7081709 is a prime.

It is a Curzon number.

7081725 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7081692 and 7081701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7081727) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 150652 + ... + 150698.

It is an arithmetic number, because the mean of its divisors is an integer number (197904).

Almost surely, 2^7081725 is an apocalyptic number.

7081725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7081725 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

7081725 is a wasteful number, since it uses less digits than its factorization.

7081725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 7081725 is about 2661.1510667379. The cubic root of 7081725 is about 192.0346888278.

The spelling of 7081725 in words is "seven million, eighty-one thousand, seven hundred twenty-five".