8025785105 has 16 divisors (see below), whose sum is σ = 10380876240. Its totient is φ = 5921538048.

The previous prime is 8025785099. The next prime is 8025785123. The reversal of 8025785105 is 5015875208.

It can be written as a sum of positive squares in 8 ways, for example, as 921486736 + 7104298369 = 30356^2 + 84287^2 .

It is a cyclic number.

It is not a de Polignac number, because 8025785105 - 2¹² = 8025781009 is a prime.

It is a super-2 number, since 2×8025785105² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21401 + ... + 128489.

It is an arithmetic number, because the mean of its divisors is an integer number (648804765).

Almost surely, 2^8025785105 is an apocalyptic number.

It is an amenable number.

8025785105 is a deficient number, since it is larger than the sum of its proper divisors (2355091135).

8025785105 is a wasteful number, since it uses less digits than its factorization.

8025785105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108260.

The product of its (nonzero) digits is 112000, while the sum is 41.

The square root of 8025785105 is about 89586.7462574682. The cubic root of 8025785105 is about 2002.1464542929.

The spelling of 8025785105 in words is "eight billion, twenty-five million, seven hundred eighty-five thousand, one hundred five".