5221979077225 has 81 divisors (see below), whose sum is σ = 7005355617477. Its totient is φ = 3861014784000.

The previous prime is 5221979077219. The next prime is 5221979077283. The reversal of 5221979077225 is 5227709791225.

It is a happy number.

The square root of 5221979077225 is 2285165.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 536191527001 + 4685787550224 = 732251^2 + 2164668^2 .

It is not a de Polignac number, because 5221979077225 - 2⁵ = 5221979077193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5221979077225.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 8146612905 + ... + 8146613545.

Almost surely, 2^{5221979077225} is an apocalyptic number.

5221979077225 is the 2285165-th square number.

5221979077225 is the 1142583-rd centered octagonal number.

It is an amenable number.

5221979077225 is a deficient number, since it is larger than the sum of its proper divisors (1783376540252).

5221979077225 is an frugal number, since it uses more digits than its factorization.

5221979077225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 58.

The spelling of 5221979077225 in words is "five trillion, two hundred twenty-one billion, nine hundred seventy-nine million, seventy-seven thousand, two hundred twenty-five".