86025504721 has 4 divisors (see below), whose sum is σ = 92642851252. Its totient is φ = 79408158192.

The previous prime is 86025504703. The next prime is 86025504731. The reversal of 86025504721 is 12740552068.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19386663696 + 66638841025 = 139236^2 + 258145^2 .

It is a cyclic number.

It is not a de Polignac number, because 86025504721 - 2²³ = 86017116113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86025504731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3308673246 + ... + 3308673271.

It is an arithmetic number, because the mean of its divisors is an integer number (23160712813).

Almost surely, 2^86025504721 is an apocalyptic number.

It is an amenable number.

86025504721 is a deficient number, since it is larger than the sum of its proper divisors (6617346531).

86025504721 is a wasteful number, since it uses less digits than its factorization.

86025504721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617346530.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 86025504721 in words is "eighty-six billion, twenty-five million, five hundred four thousand, seven hundred twenty-one".