7721725275 has 96 divisors (see below), whose sum is σ = 15556147200. Its totient is φ = 3724156800.

The previous prime is 7721725259. The next prime is 7721725279. The reversal of 7721725275 is 5725271277.

It is not a de Polignac number, because 7721725275 - 2⁴ = 7721725259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7721725275.

It is not an unprimeable number, because it can be changed into a prime (7721725279) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1460086 + ... + 1465364.

It is an arithmetic number, because the mean of its divisors is an integer number (162043200).

Almost surely, 2^7721725275 is an apocalyptic number.

7721725275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7721725275 is an abundant number, since it is smaller than the sum of its proper divisors (7834421925).

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

7721725275 is a wasteful number, since it uses less digits than its factorization.

7721725275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506 (or 5495 counting only the distinct ones).

The product of its digits is 480200, while the sum is 45.

The square root of 7721725275 is about 87873.3479218813. The cubic root of 7721725275 is about 1976.5362421098.

The spelling of 7721725275 in words is "seven billion, seven hundred twenty-one million, seven hundred twenty-five thousand, two hundred seventy-five".