866441114727025 has 6 divisors (see below), whose sum is σ = 1074386982261542. Its totient is φ = 693152891781600.

The previous prime is 866441114727007. The next prime is 866441114727047. The reversal of 866441114727025 is 520727411144668.

It can be written as a sum of positive squares in 3 ways, for example, as 58993029598864 + 807448085128161 = 7680692^2 + 28415631^2 .

It is not a de Polignac number, because 866441114727025 - 2³⁵ = 866406754988657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17328822294516 + ... + 17328822294565.

Almost surely, 2^{866441114727025} is an apocalyptic number.

It is an amenable number.

866441114727025 is a deficient number, since it is larger than the sum of its proper divisors (207945867534517).

866441114727025 is a wasteful number, since it uses less digits than its factorization.

866441114727025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34657644589091 (or 34657644589086 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 866441114727025 in words is "eight hundred sixty-six trillion, four hundred forty-one billion, one hundred fourteen million, seven hundred twenty-seven thousand, twenty-five".