7220750625 has 135 divisors (see below), whose sum is σ = 14466288837. Its totient is φ = 3466980000.

The previous prime is 7220750587. The next prime is 7220750659. The reversal of 7220750625 is 5260570227.

The square root of 7220750625 is 84975.

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

7220750625 is a `hidden beast` number, since 7 + 2 + 20 + 7 + 5 + 0 + 625 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 566106849 + 6654643776 = 23793^2 + 81576^2 .

It is not a de Polignac number, because 7220750625 - 2¹⁵ = 7220717857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7220750625.

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 134 ways as a sum of consecutive naturals, for example, 70104324 + ... + 70104426.

Almost surely, 2^7220750625 is an apocalyptic number.

7220750625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7220750625 is the 84975-th square number.

7220750625 is the 42488-th centered octagonal number.

It is an amenable number.

7220750625 is an abundant number, since it is smaller than the sum of its proper divisors (7245538212).

7220750625 is a wasteful number, since it uses less digits than its factorization.

7220750625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The cubic root of 7220750625 is about 1932.8320370100.

Multiplying 7220750625 by its sum of digits (36), we get a square (259947022500 = 509850²).

The spelling of 7220750625 in words is "seven billion, two hundred twenty million, seven hundred fifty thousand, six hundred twenty-five".