225190591 has 2 divisors, whose sum is σ = 225190592. Its totient is φ = 225190590.

The previous prime is 225190571. The next prime is 225190627. The reversal of 225190591 is 195091522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225190591 - 2⁷ = 225190463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225190561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112595295 + 112595296.

It is an arithmetic number, because the mean of its divisors is an integer number (112595296).

Almost surely, 2^225190591 is an apocalyptic number.

225190591 is a deficient number, since it is larger than the sum of its proper divisors (1).

225190591 is an equidigital number, since it uses as much as digits as its factorization.

225190591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 225190591 is about 15006.3516885351. The cubic root of 225190591 is about 608.3918863429.

The spelling of 225190591 in words is "two hundred twenty-five million, one hundred ninety thousand, five hundred ninety-one".