84825705820 has 24 divisors (see below), whose sum is σ = 178197969600. Its totient is φ = 33918094272.

The previous prime is 84825705787. The next prime is 84825705823. The reversal of 84825705820 is 2850752848.

It is a super-2 number, since 2×84825705820² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84825705823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704580 + ... + 816139.

It is an arithmetic number, because the mean of its divisors is an integer number (7424915400).

Almost surely, 2^84825705820 is an apocalyptic number.

It is an amenable number.

84825705820 is an abundant number, since it is smaller than the sum of its proper divisors (93372263780).

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

84825705820 is a wasteful number, since it uses less digits than its factorization.

84825705820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523517 (or 1523515 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 49.

The spelling of 84825705820 in words is "eighty-four billion, eight hundred twenty-five million, seven hundred five thousand, eight hundred twenty".