825796672020 has 54 divisors (see below), whose sum is σ = 2504953554558. Its totient is φ = 220209194688.

The previous prime is 825796672009. The next prime is 825796672027. The reversal of 825796672020 is 20276697528.

825796672020 is a `hidden beast` number, since 8 + 2 + 579 + 6 + 67 + 2 + 0 + 2 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 166767690384 + 659028981636 = 408372^2 + 811806^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825796672027) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12158074 + ... + 12225806.

Almost surely, 2^825796672020 is an apocalyptic number.

It is an amenable number.

825796672020 is an abundant number, since it is smaller than the sum of its proper divisors (1679156882538).

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

825796672020 is an frugal number, since it uses more digits than its factorization.

825796672020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135481 (or 67743 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 825796672020 in words is "eight hundred twenty-five billion, seven hundred ninety-six million, six hundred seventy-two thousand, twenty".