225157643 has 2 divisors, whose sum is σ = 225157644. Its totient is φ = 225157642.

The previous prime is 225157633. The next prime is 225157651. The reversal of 225157643 is 346751522.

225157643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225157643 - 2⁴ = 225157627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225157613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112578821 + 112578822.

It is an arithmetic number, because the mean of its divisors is an integer number (112578822).

Almost surely, 2^225157643 is an apocalyptic number.

225157643 is a deficient number, since it is larger than the sum of its proper divisors (1).

225157643 is an equidigital number, since it uses as much as digits as its factorization.

225157643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 225157643 is about 15005.2538465699. The cubic root of 225157643 is about 608.3622132950.

The spelling of 225157643 in words is "two hundred twenty-five million, one hundred fifty-seven thousand, six hundred forty-three".