665062525 has 12 divisors (see below), whose sum is σ = 873188532. Its totient is φ = 500752640.

The previous prime is 665062511. The next prime is 665062537. The reversal of 665062525 is 525260566.

665062525 is digitally balanced in base 2, 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 6 ways, for example, as 32137561 + 632924964 = 5669^2 + 25158^2 .

It is not a de Polignac number, because 665062525 - 2⁷ = 665062397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782002 + ... + 782851.

It is an arithmetic number, because the mean of its divisors is an integer number (72765711).

Almost surely, 2^665062525 is an apocalyptic number.

It is an amenable number.

665062525 is a deficient number, since it is larger than the sum of its proper divisors (208126007).

665062525 is a wasteful number, since it uses less digits than its factorization.

665062525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564880 (or 1564875 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 665062525 is about 25788.8061957121. The cubic root of 665062525 is about 872.8792285828.

The spelling of 665062525 in words is "six hundred sixty-five million, sixty-two thousand, five hundred twenty-five".