67866044467225 has 9 divisors (see below), whose sum is σ = 84153946215517. Its totient is φ = 54292802621440.

The previous prime is 67866044467219. The next prime is 67866044467231. The reversal of 67866044467225 is 52276444066876.

The square root of 67866044467225 is 8238085.

It is a perfect power (a square), and thus also a powerful number.

67866044467225 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 (67866044467219) and next prime (67866044467231).

It can be written as a sum of positive squares in 4 ways, for example, as 2130207387529 + 65735837079696 = 1459523^2 + 8107764^2 .

It is not a de Polignac number, because 67866044467225 - 2³³ = 67857454532633 is a prime.

It is a super-2 number, since 2×67866044467225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40366617 + ... + 42014233.

Almost surely, 2^{67866044467225} is an apocalyptic number.

67866044467225 is the 8238085-th square number.

67866044467225 is the 4119043-rd centered octagonal number.

It is an amenable number.

67866044467225 is a deficient number, since it is larger than the sum of its proper divisors (16287901748292).

67866044467225 is an frugal number, since it uses more digits than its factorization.

67866044467225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295244 (or 1647622 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 67.

The spelling of 67866044467225 in words is "sixty-seven trillion, eight hundred sixty-six billion, forty-four million, four hundred sixty-seven thousand, two hundred twenty-five".