825775556 has 6 divisors (see below), whose sum is σ = 1445107230. Its totient is φ = 412887776.

The previous prime is 825775541. The next prime is 825775567. The reversal of 825775556 is 655577528.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 692742400 + 133033156 = 26320^2 + 11534^2 .

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 as a sum of consecutive naturals, namely, 103221941 + ... + 103221948.

It is an arithmetic number, because the mean of its divisors is an integer number (240851205).

Almost surely, 2^825775556 is an apocalyptic number.

It is an amenable number.

825775556 is a deficient number, since it is larger than the sum of its proper divisors (619331674).

825775556 is a wasteful number, since it uses less digits than its factorization.

825775556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206443893 (or 206443891 counting only the distinct ones).

The product of its digits is 2940000, while the sum is 50.

The square root of 825775556 is about 28736.3107583420. The cubic root of 825775556 is about 938.1825286606.

The spelling of 825775556 in words is "eight hundred twenty-five million, seven hundred seventy-five thousand, five hundred fifty-six".