225862639 has 2 divisors, whose sum is σ = 225862640. Its totient is φ = 225862638.

The previous prime is 225862613. The next prime is 225862661. The reversal of 225862639 is 936268522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225862639 - 2¹⁷ = 225731567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225862595 and 225862604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225862669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112931319 + 112931320.

It is an arithmetic number, because the mean of its divisors is an integer number (112931320).

Almost surely, 2^225862639 is an apocalyptic number.

225862639 is a deficient number, since it is larger than the sum of its proper divisors (1).

225862639 is an equidigital number, since it uses as much as digits as its factorization.

225862639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 225862639 is about 15028.7271250762. The cubic root of 225862639 is about 608.9965038001.

The spelling of 225862639 in words is "two hundred twenty-five million, eight hundred sixty-two thousand, six hundred thirty-nine".