8257142605 has 8 divisors (see below), whose sum is σ = 9971683992. Its totient is φ = 6563638848.

The previous prime is 8257142591. The next prime is 8257142611. The reversal of 8257142605 is 5062417528.

8257142605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 32285124 + 8224857481 = 5682^2 + 90691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8257142605 - 2²⁷ = 8122924877 is a prime.

It is a Duffinian number.

It is a congruent 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, 5258542 + ... + 5260111.

It is an arithmetic number, because the mean of its divisors is an integer number (1246460499).

Almost surely, 2^8257142605 is an apocalyptic number.

It is an amenable number.

8257142605 is a deficient number, since it is larger than the sum of its proper divisors (1714541387).

8257142605 is a wasteful number, since it uses less digits than its factorization.

8257142605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10518815.

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

The square root of 8257142605 is about 90868.8208628240. The cubic root of 8257142605 is about 2021.2029730391.

The spelling of 8257142605 in words is "eight billion, two hundred fifty-seven million, one hundred forty-two thousand, six hundred five".