2311565225 has 24 divisors (see below), whose sum is σ = 3045831840. Its totient is φ = 1734232320.

The previous prime is 2311565197. The next prime is 2311565257. The reversal of 2311565225 is 5225651132.

It is not a de Polignac number, because 2311565225 - 2¹⁸ = 2311303081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2311565191 and 2311565200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110666 + ... + 129884.

It is an arithmetic number, because the mean of its divisors is an integer number (126909660).

Almost surely, 2^2311565225 is an apocalyptic number.

2311565225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2311565225 is a deficient number, since it is larger than the sum of its proper divisors (734266615).

2311565225 is a wasteful number, since it uses less digits than its factorization.

2311565225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19529 (or 19524 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 2311565225 is about 48078.7398441349. The cubic root of 2311565225 is about 1322.2149118132.

The spelling of 2311565225 in words is "two billion, three hundred eleven million, five hundred sixty-five thousand, two hundred twenty-five".