667474335630225 has 36 divisors (see below), whose sum is σ = 1227832069185436. Its totient is φ = 346365060647040.

The previous prime is 667474335630173. The next prime is 667474335630229. The reversal of 667474335630225 is 522036533474766.

667474335630225 is a `hidden beast` number, since 6 + 6 + 7 + 4 + 7 + 43 + 3 + 563 + 0 + 2 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 62153293317696 + 605321042312529 = 7883736^2 + 24603273^2 .

It is not a de Polignac number, because 667474335630225 - 2⁶ = 667474335630161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667474335630229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40088540362 + ... + 40088557011.

Almost surely, 2^{667474335630225} is an apocalyptic number.

It is an amenable number.

667474335630225 is a deficient number, since it is larger than the sum of its proper divisors (560357733555211).

667474335630225 is a wasteful number, since it uses less digits than its factorization.

667474335630225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80177097426 (or 80177097418 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 63.

The spelling of 667474335630225 in words is "six hundred sixty-seven trillion, four hundred seventy-four billion, three hundred thirty-five million, six hundred thirty thousand, two hundred twenty-five".