857245895 has 16 divisors (see below), whose sum is σ = 1181278080. Its totient is φ = 590637600.

The previous prime is 857245891. The next prime is 857245901. The reversal of 857245895 is 598542758.

It is not a de Polignac number, because 857245895 - 2² = 857245891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857245891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409121 + ... + 411210.

It is an arithmetic number, because the mean of its divisors is an integer number (73829880).

Almost surely, 2^857245895 is an apocalyptic number.

857245895 is a deficient number, since it is larger than the sum of its proper divisors (324032185).

857245895 is a wasteful number, since it uses less digits than its factorization.

857245895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820366.

The product of its digits is 4032000, while the sum is 53.

The square root of 857245895 is about 29278.7618419905. The cubic root of 857245895 is about 949.9523133958.

It can be divided in two parts, 85724 and 5895, that added together give a palindrome (91619).

The spelling of 857245895 in words is "eight hundred fifty-seven million, two hundred forty-five thousand, eight hundred ninety-five".