857395125 has 84 divisors (see below), whose sum is σ = 1621019556. Its totient is φ = 452563200.

The previous prime is 857395079. The next prime is 857395129. The reversal of 857395125 is 521593758.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

857395125 is a `hidden beast` number, since 8 + 573 + 9 + 51 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 319479876 + 537915249 = 17874^2 + 23193^2 .

It is not a de Polignac number, because 857395125 - 2¹⁶ = 857329589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (378000) is a multiple of the sum of its prime divisors (105).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857395129) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 8839077 + ... + 8839173.

Almost surely, 2^857395125 is an apocalyptic number.

It is an amenable number.

857395125 is a deficient number, since it is larger than the sum of its proper divisors (763624431).

857395125 is an frugal number, since it uses more digits than its factorization.

857395125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 105 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 857395125 is about 29281.3101653597. The cubic root of 857395125 is about 950.0074329982.

Multiplying 857395125 by its sum of digits (45), we get a square (38582780625 = 196425²).

857395125 divided by its sum of digits (45) gives a square (19053225 = 4365²).

The spelling of 857395125 in words is "eight hundred fifty-seven million, three hundred ninety-five thousand, one hundred twenty-five".