667525 has 6 divisors (see below), whose sum is σ = 827762. Its totient is φ = 534000.

The previous prime is 667519. The next prime is 667531. The reversal of 667525 is 525766.

667525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (667519) and next prime (667531).

It can be written as a sum of positive squares in 3 ways, for example, as 36 + 667489 = 6^2 + 817^2 .

It is not a de Polignac number, because 667525 - 2⁹ = 667013 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 5 ways as a sum of consecutive naturals, for example, 13326 + ... + 13375.

2⁶⁶⁷⁵²⁵ is an apocalyptic number.

It is an amenable number.

667525 is a deficient number, since it is larger than the sum of its proper divisors (160237).

667525 is a wasteful number, since it uses less digits than its factorization.

667525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26711 (or 26706 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 667525 is about 817.0220315267. The cubic root of 667525 is about 87.3955215568.

The spelling of 667525 in words is "six hundred sixty-seven thousand, five hundred twenty-five".