825004774772 has 6 divisors (see below), whose sum is σ = 1443758355858. Its totient is φ = 412502387384.

The previous prime is 825004774747. The next prime is 825004774801. The reversal of 825004774772 is 277477400528.

It can be written as a sum of positive squares in only one way, i.e., 455967964516 + 369036810256 = 675254^2 + 607484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103125596843 + ... + 103125596850.

It is an arithmetic number, because the mean of its divisors is an integer number (240626392643).

Almost surely, 2^825004774772 is an apocalyptic number.

It is an amenable number.

825004774772 is a deficient number, since it is larger than the sum of its proper divisors (618753581086).

825004774772 is a wasteful number, since it uses less digits than its factorization.

825004774772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206251193697 (or 206251193695 counting only the distinct ones).

The product of its (nonzero) digits is 6146560, while the sum is 53.

The spelling of 825004774772 in words is "eight hundred twenty-five billion, four million, seven hundred seventy-four thousand, seven hundred seventy-two".