5178961225 has 27 divisors (see below), whose sum is σ = 6617178687. Its totient is φ = 4020828480.

The previous prime is 5178961211. The next prime is 5178961253. The reversal of 5178961225 is 5221698715.

The square root of 5178961225 is 71965.

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

It can be written as a sum of positive squares in 13 ways, for example, as 2407570489 + 2771390736 = 49067^2 + 52644^2 .

It is not a de Polignac number, because 5178961225 - 2¹⁹ = 5178436937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13313331 + ... + 13313719.

Almost surely, 2^5178961225 is an apocalyptic number.

5178961225 is the 71965-th square number.

5178961225 is the 35983-rd centered octagonal number.

It is an amenable number.

5178961225 is a deficient number, since it is larger than the sum of its proper divisors (1438217462).

5178961225 is an frugal number, since it uses more digits than its factorization.

5178961225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 431 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The cubic root of 5178961225 is about 1730.1385640849.

The spelling of 5178961225 in words is "five billion, one hundred seventy-eight million, nine hundred sixty-one thousand, two hundred twenty-five".