8086821625 has 8 divisors (see below), whose sum is σ = 10092353544. Its totient is φ = 6469457200.

The previous prime is 8086821619. The next prime is 8086821661. The reversal of 8086821625 is 5261286808.

It can be written as a sum of positive squares in 4 ways, for example, as 192321424 + 7894500201 = 13868^2 + 88851^2 .

It is not a de Polignac number, because 8086821625 - 2²⁵ = 8053267193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32347162 + ... + 32347411.

It is an arithmetic number, because the mean of its divisors is an integer number (1261544193).

Almost surely, 2^8086821625 is an apocalyptic number.

It is an amenable number.

8086821625 is a deficient number, since it is larger than the sum of its proper divisors (2005531919).

8086821625 is an equidigital number, since it uses as much as digits as its factorization.

8086821625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64694588 (or 64694578 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 8086821625 is about 89926.7570025740. The cubic root of 8086821625 is about 2007.2091184996.

The spelling of 8086821625 in words is "eight billion, eighty-six million, eight hundred twenty-one thousand, six hundred twenty-five".