667067525 has 6 divisors (see below), whose sum is σ = 827163762. Its totient is φ = 533654000.

The previous prime is 667067519. The next prime is 667067537. The reversal of 667067525 is 525760766.

It can be written as a sum of positive squares in 3 ways, for example, as 231009601 + 436057924 = 15199^2 + 20882^2 .

It is not a de Polignac number, because 667067525 - 2¹⁴ = 667051141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 13341326 + ... + 13341375.

It is an arithmetic number, because the mean of its divisors is an integer number (137860627).

Almost surely, 2^667067525 is an apocalyptic number.

It is an amenable number.

667067525 is a deficient number, since it is larger than the sum of its proper divisors (160096237).

667067525 is a wasteful number, since it uses less digits than its factorization.

667067525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26682711 (or 26682706 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 44.

The square root of 667067525 is about 25827.6503964259. The cubic root of 667067525 is about 873.7555206592.

The spelling of 667067525 in words is "six hundred sixty-seven million, sixty-seven thousand, five hundred twenty-five".