825761878 has 16 divisors (see below), whose sum is σ = 1255752000. Its totient is φ = 407189952.

The previous prime is 825761837. The next prime is 825761929. The reversal of 825761878 is 878167528.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 166458 + ... + 171346.

It is an arithmetic number, because the mean of its divisors is an integer number (78484500).

Almost surely, 2^825761878 is an apocalyptic number.

825761878 is a deficient number, since it is larger than the sum of its proper divisors (429990122).

825761878 is a wasteful number, since it uses less digits than its factorization.

825761878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6039.

The product of its digits is 1505280, while the sum is 52.

The square root of 825761878 is about 28736.0727657765. The cubic root of 825761878 is about 938.1773486690.

The spelling of 825761878 in words is "eight hundred twenty-five million, seven hundred sixty-one thousand, eight hundred seventy-eight".