7521725812 has 24 divisors (see below), whose sum is σ = 13231886976. Its totient is φ = 3741214848.

The previous prime is 7521725779. The next prime is 7521725867. The reversal of 7521725812 is 2185271257.

It is a happy number.

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, 1434748 + ... + 1439980.

It is an arithmetic number, because the mean of its divisors is an integer number (551328624).

Almost surely, 2^7521725812 is an apocalyptic number.

It is an amenable number.

7521725812 is a deficient number, since it is larger than the sum of its proper divisors (5710161164).

7521725812 is a wasteful number, since it uses less digits than its factorization.

7521725812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7047 (or 7045 counting only the distinct ones).

The product of its digits is 78400, while the sum is 40.

The square root of 7521725812 is about 86727.8837052998. The cubic root of 7521725812 is about 1959.3220802104.

The spelling of 7521725812 in words is "seven billion, five hundred twenty-one million, seven hundred twenty-five thousand, eight hundred twelve".