7257725 has 12 divisors (see below), whose sum is σ = 9529524. Its totient is φ = 5464320.

The previous prime is 7257721. The next prime is 7257739. The reversal of 7257725 is 5277527.

It can be written as a sum of positive squares in 6 ways, for example, as 5476 + 7252249 = 74^2 + 2693^2 .

It is not a de Polignac number, because 7257725 - 2² = 7257721 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7257721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8114 + ... + 8963.

It is an arithmetic number, because the mean of its divisors is an integer number (794127).

Almost surely, 2^7257725 is an apocalyptic number.

It is an amenable number.

7257725 is a deficient number, since it is larger than the sum of its proper divisors (2271799).

7257725 is a wasteful number, since it uses less digits than its factorization.

7257725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17104 (or 17099 counting only the distinct ones).

The product of its digits is 34300, while the sum is 35.

The square root of 7257725 is about 2694.0165181379. The cubic root of 7257725 is about 193.6125490608.

The spelling of 7257725 in words is "seven million, two hundred fifty-seven thousand, seven hundred twenty-five".