7663725 has 18 divisors (see below), whose sum is σ = 13726986. Its totient is φ = 4087200.

The previous prime is 7663709. The next prime is 7663729. The reversal of 7663725 is 5273667.

It is a happy number.

7663725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 145161 + 7518564 = 381^2 + 2742^2 .

It is not a de Polignac number, because 7663725 - 2⁴ = 7663709 is a prime.

It is a super-3 number, since 3×7663725³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7663725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7663729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16806 + ... + 17255.

Almost surely, 2^7663725 is an apocalyptic number.

7663725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7663725 is a deficient number, since it is larger than the sum of its proper divisors (6063261).

7663725 is a wasteful number, since it uses less digits than its factorization.

7663725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34077 (or 34069 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 7663725 is about 2768.3433674311. The cubic root of 7663725 is about 197.1575007126.

The spelling of 7663725 in words is "seven million, six hundred sixty-three thousand, seven hundred twenty-five".