5611643225 has 12 divisors (see below), whose sum is σ = 7053760956. Its totient is φ = 4427815680.

The previous prime is 5611643207. The next prime is 5611643239. The reversal of 5611643225 is 5223461165.

It can be written as a sum of positive squares in 6 ways, for example, as 17799961 + 5593843264 = 4219^2 + 74792^2 .

It is not a de Polignac number, because 5611643225 - 2¹⁴ = 5611626841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1535612 + ... + 1539261.

It is an arithmetic number, because the mean of its divisors is an integer number (587813413).

Almost surely, 2^5611643225 is an apocalyptic number.

It is an amenable number.

5611643225 is a deficient number, since it is larger than the sum of its proper divisors (1442117731).

5611643225 is a wasteful number, since it uses less digits than its factorization.

5611643225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074956 (or 3074951 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 5611643225 is about 74910.9019102026. The cubic root of 5611643225 is about 1777.0378736695.

The spelling of 5611643225 in words is "five billion, six hundred eleven million, six hundred forty-three thousand, two hundred twenty-five".