667604501346725 has 12 divisors (see below), whose sum is σ = 856375429314660. Its totient is φ = 515666925177600.

The previous prime is 667604501346691. The next prime is 667604501346751. The reversal of 667604501346725 is 527643105406766.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 211373740516 + 667393127606209 = 459754^2 + 25833953^2 .

It is not a de Polignac number, because 667604501346725 - 2¹⁸ = 667604501084581 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 460416896756 + ... + 460416898205.

It is an arithmetic number, because the mean of its divisors is an integer number (71364619109555).

Almost surely, 2^{667604501346725} is an apocalyptic number.

It is an amenable number.

667604501346725 is a deficient number, since it is larger than the sum of its proper divisors (188770927967935).

667604501346725 is a wasteful number, since it uses less digits than its factorization.

667604501346725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920833795000 (or 920833794995 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 62.

The spelling of 667604501346725 in words is "six hundred sixty-seven trillion, six hundred four billion, five hundred one million, three hundred forty-six thousand, seven hundred twenty-five".