7325551872 has 252 divisors, whose sum is σ = 23223386340. Its totient is φ = 2297217024.

The previous prime is 7325551867. The next prime is 7325551913. The reversal of 7325551872 is 2781555237.

7325551872 is a `hidden beast` number, since 7 + 3 + 25 + 551 + 8 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5912994816 + 1412557056 = 76896^2 + 37584^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3171454 + ... + 3173762.

It is an arithmetic number, because the mean of its divisors is an integer number (92156295).

Almost surely, 2^7325551872 is an apocalyptic number.

7325551872 is a gapful number since it is divisible by the number (72) 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 7325551872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11611693170).

7325551872 is an abundant number, since it is smaller than the sum of its proper divisors (15897834468).

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

7325551872 is an equidigital number, since it uses as much as digits as its factorization.

7325551872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2331 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 7325551872 is about 85589.4378530435. The cubic root of 7325551872 is about 1942.1381350646.

The spelling of 7325551872 in words is "seven billion, three hundred twenty-five million, five hundred fifty-one thousand, eight hundred seventy-two".