2225746661 has 2 divisors, whose sum is σ = 2225746662. Its totient is φ = 2225746660.

The previous prime is 2225746651. The next prime is 2225746687. The reversal of 2225746661 is 1666475222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2193142561 + 32604100 = 46831^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225746661 - 2⁶ = 2225746597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2225746651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112873330 + 1112873331.

It is an arithmetic number, because the mean of its divisors is an integer number (1112873331).

Almost surely, 2^2225746661 is an apocalyptic number.

It is an amenable number.

2225746661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2225746661 is an equidigital number, since it uses as much as digits as its factorization.

2225746661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 41.

The square root of 2225746661 is about 47177.8195871746. The cubic root of 2225746661 is about 1305.6454015579.

The spelling of 2225746661 in words is "two billion, two hundred twenty-five million, seven hundred forty-six thousand, six hundred sixty-one".