225944149 has 2 divisors, whose sum is σ = 225944150. Its totient is φ = 225944148.

The previous prime is 225944123. The next prime is 225944221. The reversal of 225944149 is 941449522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195804049 + 30140100 = 13993^2 + 5490^2 .

It is a cyclic number.

It is not a de Polignac number, because 225944149 - 2⁷ = 225944021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225944449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112972074 + 112972075.

It is an arithmetic number, because the mean of its divisors is an integer number (112972075).

Almost surely, 2^225944149 is an apocalyptic number.

It is an amenable number.

225944149 is a deficient number, since it is larger than the sum of its proper divisors (1).

225944149 is an equidigital number, since it uses as much as digits as its factorization.

225944149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 225944149 is about 15031.4386869654. The cubic root of 225944149 is about 609.0697538296.

The spelling of 225944149 in words is "two hundred twenty-five million, nine hundred forty-four thousand, one hundred forty-nine".