52220225 has 12 divisors (see below), whose sum is σ = 64927020. Its totient is φ = 41664000.

The previous prime is 52220219. The next prime is 52220249. The reversal of 52220225 is 52202225.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13082689 + 39137536 = 3617^2 + 6256^2 .

It is not a de Polignac number, because 52220225 - 2⁸ = 52219969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52220197 and 52220206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7421 + ... + 12629.

It is an arithmetic number, because the mean of its divisors is an integer number (5410585).

Almost surely, 2^52220225 is an apocalyptic number.

It is an amenable number.

52220225 is a deficient number, since it is larger than the sum of its proper divisors (12706795).

52220225 is a wasteful number, since it uses less digits than its factorization.

52220225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620 (or 5615 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 52220225 is about 7226.3562740845. The cubic root of 52220225 is about 373.7772916988. Note that the first 3 decimals are identical.

The spelling of 52220225 in words is "fifty-two million, two hundred twenty thousand, two hundred twenty-five".