225146291 has 2 divisors, whose sum is σ = 225146292. Its totient is φ = 225146290.

The previous prime is 225146261. The next prime is 225146329. The reversal of 225146291 is 192641522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225146291 - 2²² = 220951987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225146231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112573145 + 112573146.

It is an arithmetic number, because the mean of its divisors is an integer number (112573146).

Almost surely, 2^225146291 is an apocalyptic number.

225146291 is a deficient number, since it is larger than the sum of its proper divisors (1).

225146291 is an equidigital number, since it uses as much as digits as its factorization.

225146291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 225146291 is about 15004.8755742925. The cubic root of 225146291 is about 608.3519889861.

The spelling of 225146291 in words is "two hundred twenty-five million, one hundred forty-six thousand, two hundred ninety-one".