667367121007025 has 12 divisors (see below), whose sum is σ = 827585810302284. Its totient is φ = 533861064384000.

The previous prime is 667367121007019. The next prime is 667367121007079. The reversal of 667367121007025 is 520700121763766.

It can be written as a sum of positive squares in 6 ways, for example, as 195403270883584 + 471963850123441 = 13978672^2 + 21724729^2 .

It is not a de Polignac number, because 667367121007025 - 2¹⁴ = 667367120990641 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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, 815393336 + ... + 816211385.

It is an arithmetic number, because the mean of its divisors is an integer number (68965484191857).

Almost surely, 2^{667367121007025} is an apocalyptic number.

It is an amenable number.

667367121007025 is a deficient number, since it is larger than the sum of its proper divisors (160218689295259).

667367121007025 is a wasteful number, since it uses less digits than its factorization.

667367121007025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631621092 (or 1631621087 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 667367121007025 in words is "six hundred sixty-seven trillion, three hundred sixty-seven billion, one hundred twenty-one million, seven thousand, twenty-five".