6525200820 has 96 divisors (see below), whose sum is σ = 18825343488. Its totient is φ = 1687877632.

The previous prime is 6525200777. The next prime is 6525200863. The reversal of 6525200820 is 280025256.

It is an interprime number because it is at equal distance from previous prime (6525200777) and next prime (6525200863).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308422 + ... + 328898.

It is an arithmetic number, because the mean of its divisors is an integer number (196097328).

Almost surely, 2^6525200820 is an apocalyptic number.

6525200820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6525200820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9412671744).

6525200820 is an abundant number, since it is smaller than the sum of its proper divisors (12300142668).

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

6525200820 is a wasteful number, since it uses less digits than its factorization.

6525200820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20649 (or 20647 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 6525200820 is about 80778.7151420472. The cubic root of 6525200820 is about 1868.6643230631.

The spelling of 6525200820 in words is "six billion, five hundred twenty-five million, two hundred thousand, eight hundred twenty".