825541685 has 8 divisors (see below), whose sum is σ = 993458520. Its totient is φ = 658561024.

The previous prime is 825541679. The next prime is 825541741. The reversal of 825541685 is 586145528.

It can be written as a sum of positive squares in 4 ways, for example, as 233203441 + 592338244 = 15271^2 + 24338^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 825541685 - 2⁸ = 825541429 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 232100 + ... + 235629.

It is an arithmetic number, because the mean of its divisors is an integer number (124182315).

Almost surely, 2^825541685 is an apocalyptic number.

It is an amenable number.

825541685 is a deficient number, since it is larger than the sum of its proper divisors (167916835).

825541685 is a wasteful number, since it uses less digits than its factorization.

825541685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468087.

The product of its digits is 384000, while the sum is 44.

The square root of 825541685 is about 28732.2412108767. The cubic root of 825541685 is about 938.0939515642.

The spelling of 825541685 in words is "eight hundred twenty-five million, five hundred forty-one thousand, six hundred eighty-five".