856425735 has 24 divisors (see below), whose sum is σ = 1619424144. Its totient is φ = 415236480.

The previous prime is 856425701. The next prime is 856425821. The reversal of 856425735 is 537524658.

856425735 is a `hidden beast` number, since 8 + 564 + 2 + 57 + 35 = 666.

It is not a de Polignac number, because 856425735 - 2¹⁵ = 856392967 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 (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 864582 + ... + 865571.

It is an arithmetic number, because the mean of its divisors is an integer number (67476006).

Almost surely, 2^856425735 is an apocalyptic number.

856425735 is a deficient number, since it is larger than the sum of its proper divisors (762998409).

856425735 is a wasteful number, since it uses less digits than its factorization.

856425735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730175 (or 1730172 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 856425735 is about 29264.7524336018. The cubic root of 856425735 is about 949.6492648014.

The spelling of 856425735 in words is "eight hundred fifty-six million, four hundred twenty-five thousand, seven hundred thirty-five".