825142785 has 16 divisors (see below), whose sum is σ = 1333048704. Its totient is φ = 435802752.

The previous prime is 825142777. The next prime is 825142793. The reversal of 825142785 is 587241528.

It is an interprime number because it is at equal distance from previous prime (825142777) and next prime (825142793).

It is not a de Polignac number, because 825142785 - 2³ = 825142777 is a prime.

It is an unprimeable number.

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, 265492 + ... + 268581.

It is an arithmetic number, because the mean of its divisors is an integer number (83315544).

Almost surely, 2^825142785 is an apocalyptic number.

It is an amenable number.

825142785 is a deficient number, since it is larger than the sum of its proper divisors (507905919).

825142785 is a wasteful number, since it uses less digits than its factorization.

825142785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534184.

The product of its digits is 179200, while the sum is 42.

The square root of 825142785 is about 28725.2986929640. The cubic root of 825142785 is about 937.9428322156.

The spelling of 825142785 in words is "eight hundred twenty-five million, one hundred forty-two thousand, seven hundred eighty-five".