667454725 has 18 divisors (see below), whose sum is σ = 962771154. Its totient is φ = 457682400.

The previous prime is 667454693. The next prime is 667454747. The reversal of 667454725 is 527454766.

It can be written as a sum of positive squares in 3 ways, for example, as 1350244 + 666104481 = 1162^2 + 25809^2 .

It is not a de Polignac number, because 667454725 - 2⁵ = 667454693 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 (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 271206 + ... + 273655.

Almost surely, 2^667454725 is an apocalyptic number.

It is an amenable number.

667454725 is a deficient number, since it is larger than the sum of its proper divisors (295316429).

667454725 is a wasteful number, since it uses less digits than its factorization.

667454725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544885 (or 544873 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 46.

The square root of 667454725 is about 25835.1451515179. The cubic root of 667454725 is about 873.9245453766.

The spelling of 667454725 in words is "six hundred sixty-seven million, four hundred fifty-four thousand, seven hundred twenty-five".