55844779225 has 27 divisors (see below), whose sum is σ = 69932580669. Its totient is φ = 44238168000.

The previous prime is 55844779223. The next prime is 55844779259. The reversal of 55844779225 is 52297744855.

The square root of 55844779225 is 236315.

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 31372557129 + 24472222096 = 177123^2 + 156436^2 .

It is not a de Polignac number, because 55844779225 - 2¹ = 55844779223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55844779225.

It is not an unprimeable number, because it can be changed into a prime (55844779223) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 178417669 + ... + 178417981.

Almost surely, 2^55844779225 is an apocalyptic number.

55844779225 is the 236315-th square number.

55844779225 is the 118158-th centered octagonal number.

It is an amenable number.

55844779225 is a deficient number, since it is larger than the sum of its proper divisors (14087801444).

55844779225 is an frugal number, since it uses more digits than its factorization.

55844779225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 469 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 58.

The spelling of 55844779225 in words is "fifty-five billion, eight hundred forty-four million, seven hundred seventy-nine thousand, two hundred twenty-five".