865396125 has 48 divisors (see below), whose sum is σ = 1701865152. Its totient is φ = 419580000.

The previous prime is 865396111. The next prime is 865396151. The reversal of 865396125 is 521693568.

It is not a de Polignac number, because 865396125 - 2¹¹ = 865394077 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22591 + ... + 47340.

It is an arithmetic number, because the mean of its divisors is an integer number (35455524).

Almost surely, 2^865396125 is an apocalyptic number.

It is an amenable number.

865396125 is a deficient number, since it is larger than the sum of its proper divisors (836469027).

865396125 is a wasteful number, since it uses less digits than its factorization.

865396125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69963 (or 69950 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 865396125 is about 29417.6158959220. The cubic root of 865396125 is about 952.9533667481.

The spelling of 865396125 in words is "eight hundred sixty-five million, three hundred ninety-six thousand, one hundred twenty-five".