667725253 has 12 divisors (see below), whose sum is σ = 723988260. Its totient is φ = 615553536.

The previous prime is 667725181. The next prime is 667725277. The reversal of 667725253 is 352527766.

It can be written as a sum of positive squares in 6 ways, for example, as 437353569 + 230371684 = 20913^2 + 15178^2 .

It is not a de Polignac number, because 667725253 - 2⁹ = 667724741 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 (667725293) 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, 154875 + ... + 159127.

It is an arithmetic number, because the mean of its divisors is an integer number (60332355).

Almost surely, 2^667725253 is an apocalyptic number.

It is an amenable number.

667725253 is a deficient number, since it is larger than the sum of its proper divisors (56263007).

667725253 is a wasteful number, since it uses less digits than its factorization.

667725253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5208 (or 5195 counting only the distinct ones).

The product of its digits is 529200, while the sum is 43.

The square root of 667725253 is about 25840.3802797095. The cubic root of 667725253 is about 874.0426003878.

The spelling of 667725253 in words is "six hundred sixty-seven million, seven hundred twenty-five thousand, two hundred fifty-three".