825621332766 has 16 divisors (see below), whose sum is σ = 1651252602000. Its totient is φ = 275205454848.

The previous prime is 825621332677. The next prime is 825621332797. The reversal of 825621332766 is 667233126528.

825621332766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×825621332766² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081950 + ... + 1679838.

It is an arithmetic number, because the mean of its divisors is an integer number (103203287625).

Almost surely, 2^825621332766 is an apocalyptic number.

825621332766 is an abundant number, since it is smaller than the sum of its proper divisors (825631269234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825621332766 is a wasteful number, since it uses less digits than its factorization.

825621332766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828043.

The product of its digits is 4354560, while the sum is 51.

The spelling of 825621332766 in words is "eight hundred twenty-five billion, six hundred twenty-one million, three hundred thirty-two thousand, seven hundred sixty-six".