7661725 has 12 divisors (see below), whose sum is σ = 9574164. Its totient is φ = 6081920.

The previous prime is 7661723. The next prime is 7661741. The reversal of 7661725 is 5271667.

It can be written as a sum of positive squares in 6 ways, for example, as 27556 + 7634169 = 166^2 + 2763^2 .

It is not a de Polignac number, because 7661725 - 2¹ = 7661723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661723) 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 11 ways as a sum of consecutive naturals, for example, 2307 + ... + 4543.

It is an arithmetic number, because the mean of its divisors is an integer number (797847).

Almost surely, 2^7661725 is an apocalyptic number.

It is an amenable number.

7661725 is a deficient number, since it is larger than the sum of its proper divisors (1912439).

7661725 is a wasteful number, since it uses less digits than its factorization.

7661725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384 (or 2379 counting only the distinct ones).

The product of its digits is 17640, while the sum is 34.

The square root of 7661725 is about 2767.9821169943. The cubic root of 7661725 is about 197.1403485093.

The spelling of 7661725 in words is "seven million, six hundred sixty-one thousand, seven hundred twenty-five".