655730525 has 12 divisors (see below), whose sum is σ = 820305012. Its totient is φ = 519939840.

The previous prime is 655730501. The next prime is 655730531. The reversal of 655730525 is 525037556.

It can be written as a sum of positive squares in 6 ways, for example, as 145106116 + 510624409 = 12046^2 + 22597^2 .

It is not a de Polignac number, because 655730525 - 2¹⁸ = 655468381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 113234 + ... + 118883.

It is an arithmetic number, because the mean of its divisors is an integer number (68358751).

Almost surely, 2^655730525 is an apocalyptic number.

It is an amenable number.

655730525 is a deficient number, since it is larger than the sum of its proper divisors (164574487).

655730525 is a wasteful number, since it uses less digits than its factorization.

655730525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232240 (or 232235 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 38.

The square root of 655730525 is about 25607.2357938142. The cubic root of 655730525 is about 868.7773043193. Note that the first 3 decimals are identical.

The spelling of 655730525 in words is "six hundred fifty-five million, seven hundred thirty thousand, five hundred twenty-five".