2225743816 has 8 divisors (see below), whose sum is σ = 4173269670. Its totient is φ = 1112871904.

The previous prime is 2225743813. The next prime is 2225743831. The reversal of 2225743816 is 6183475222.

It can be written as a sum of positive squares in only one way, i.e., 1381608900 + 844134916 = 37170^2 + 29054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2225743811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139108981 + ... + 139108996.

Almost surely, 2^2225743816 is an apocalyptic number.

It is an amenable number.

2225743816 is a deficient number, since it is larger than the sum of its proper divisors (1947525854).

2225743816 is a wasteful number, since it uses less digits than its factorization.

2225743816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278217983 (or 278217979 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 2225743816 is about 47177.7894352841. The cubic root of 2225743816 is about 1305.6448452558.

The spelling of 2225743816 in words is "two billion, two hundred twenty-five million, seven hundred forty-three thousand, eight hundred sixteen".