86817390232225 has 9 divisors (see below), whose sum is σ = 107653621657017. Its totient is φ = 69453874915440.

The previous prime is 86817390232219. The next prime is 86817390232231. The reversal of 86817390232225 is 52223209371868.

The square root of 86817390232225 is 9317585.

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

It is an interprime number because it is at equal distance from previous prime (86817390232219) and next prime (86817390232231).

It can be written as a sum of positive squares in 4 ways, for example, as 26792456356449 + 60024933875776 = 5176143^2 + 7747576^2 .

It is not a de Polignac number, because 86817390232225 - 2⁹ = 86817390231713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86817390232225.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45656167 + ... + 47519683.

Almost surely, 2^{86817390232225} is an apocalyptic number.

86817390232225 is the 9317585-th square number.

86817390232225 is the 4658793-rd centered octagonal number.

It is an amenable number.

86817390232225 is a deficient number, since it is larger than the sum of its proper divisors (20836231424792).

86817390232225 is an frugal number, since it uses more digits than its factorization.

86817390232225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727044 (or 1863522 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 86817390232225 in words is "eighty-six trillion, eight hundred seventeen billion, three hundred ninety million, two hundred thirty-two thousand, two hundred twenty-five".