225635623 has 2 divisors, whose sum is σ = 225635624. Its totient is φ = 225635622.

The previous prime is 225635603. The next prime is 225635633. The reversal of 225635623 is 326536522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225635623 - 2⁵ = 225635591 is a prime.

It is a super-3 number, since 3×225635623³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225635603) 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, 112817811 + 112817812.

It is an arithmetic number, because the mean of its divisors is an integer number (112817812).

Almost surely, 2^225635623 is an apocalyptic number.

225635623 is a deficient number, since it is larger than the sum of its proper divisors (1).

225635623 is an equidigital number, since it uses as much as digits as its factorization.

225635623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 34.

The square root of 225635623 is about 15021.1724908544. The cubic root of 225635623 is about 608.7923999606.

The spelling of 225635623 in words is "two hundred twenty-five million, six hundred thirty-five thousand, six hundred twenty-three".