7285725 has 18 divisors (see below), whose sum is σ = 13049946. Its totient is φ = 3885600.

The previous prime is 7285723. The next prime is 7285727. The reversal of 7285725 is 5275827.

It is an interprime number because it is at equal distance from previous prime (7285723) and next prime (7285727).

It can be written as a sum of positive squares in 3 ways, for example, as 675684 + 6610041 = 822^2 + 2571^2 .

It is not a de Polignac number, because 7285725 - 2¹ = 7285723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7285725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7285723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15966 + ... + 16415.

It is an arithmetic number, because the mean of its divisors is an integer number (724997).

Almost surely, 2^7285725 is an apocalyptic number.

7285725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7285725 is a deficient number, since it is larger than the sum of its proper divisors (5764221).

7285725 is a wasteful number, since it uses less digits than its factorization.

7285725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32397 (or 32389 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 7285725 is about 2699.2082172370. The cubic root of 7285725 is about 193.8612125998.

The spelling of 7285725 in words is "seven million, two hundred eighty-five thousand, seven hundred twenty-five".