225013643 has 2 divisors, whose sum is σ = 225013644. Its totient is φ = 225013642.

The previous prime is 225013631. The next prime is 225013703. The reversal of 225013643 is 346310522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225013643 - 2¹⁶ = 224948107 is a prime.

It is a super-2 number, since 2×225013643² = 101262279072262898, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (225013543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112506821 + 112506822.

It is an arithmetic number, because the mean of its divisors is an integer number (112506822).

Almost surely, 2^225013643 is an apocalyptic number.

225013643 is a deficient number, since it is larger than the sum of its proper divisors (1).

225013643 is an equidigital number, since it uses as much as digits as its factorization.

225013643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 225013643 is about 15000.4547597731. The cubic root of 225013643 is about 608.2324925654.

The spelling of 225013643 in words is "two hundred twenty-five million, thirteen thousand, six hundred forty-three".