2311656225 has 48 divisors (see below), whose sum is σ = 3929058048. Its totient is φ = 1198679040.

The previous prime is 2311656203. The next prime is 2311656227. The reversal of 2311656225 is 5226561132.

It is not a de Polignac number, because 2311656225 - 2⁷ = 2311656097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2311656227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 551337 + ... + 555513.

It is an arithmetic number, because the mean of its divisors is an integer number (81855376).

Almost surely, 2^2311656225 is an apocalyptic number.

2311656225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2311656225 is a deficient number, since it is larger than the sum of its proper divisors (1617401823).

2311656225 is a wasteful number, since it uses less digits than its factorization.

2311656225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4394 (or 4389 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 2311656225 is about 48079.6861990592. The cubic root of 2311656225 is about 1322.2322622470.

The spelling of 2311656225 in words is "two billion, three hundred eleven million, six hundred fifty-six thousand, two hundred twenty-five".