225785393 has 2 divisors, whose sum is σ = 225785394. Its totient is φ = 225785392.

The previous prime is 225785383. The next prime is 225785437. The reversal of 225785393 is 393587522.

It is an a-pointer prime, because the next prime (225785437) can be obtained adding 225785393 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225690529 + 94864 = 15023^2 + 308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225785393 is a prime.

It is not a weakly prime, because it can be changed into another prime (225785333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112892696 + 112892697.

It is an arithmetic number, because the mean of its divisors is an integer number (112892697).

Almost surely, 2^225785393 is an apocalyptic number.

It is an amenable number.

225785393 is a deficient number, since it is larger than the sum of its proper divisors (1).

225785393 is an equidigital number, since it uses as much as digits as its factorization.

225785393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 225785393 is about 15026.1569604473. The cubic root of 225785393 is about 608.9270694039.

The spelling of 225785393 in words is "two hundred twenty-five million, seven hundred eighty-five thousand, three hundred ninety-three".