825321822450 has 24 divisors (see below), whose sum is σ = 2046798120048. Its totient is φ = 220085819280.

The previous prime is 825321822443. The next prime is 825321822461. The reversal of 825321822450 is 54228123528.

It is a super-2 number, since 2×825321822450² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2751072592 + ... + 2751072891.

It is an arithmetic number, because the mean of its divisors is an integer number (85283255002).

Almost surely, 2^825321822450 is an apocalyptic number.

825321822450 is an abundant number, since it is smaller than the sum of its proper divisors (1221476297598).

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

825321822450 is a wasteful number, since it uses less digits than its factorization.

825321822450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502145498 (or 5502145493 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

Adding to 825321822450 its reverse (54228123528), we get a palindrome (879549945978).

The spelling of 825321822450 in words is "eight hundred twenty-five billion, three hundred twenty-one million, eight hundred twenty-two thousand, four hundred fifty".