225445523 has 2 divisors, whose sum is σ = 225445524. Its totient is φ = 225445522.

The previous prime is 225445487. The next prime is 225445543. The reversal of 225445523 is 325544522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225445523 - 2¹² = 225441427 is a prime.

It is equal to p_12405929 and since 225445523 and 12405929 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225445523.

It is not a weakly prime, because it can be changed into another prime (225445543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112722761 + 112722762.

It is an arithmetic number, because the mean of its divisors is an integer number (112722762).

Almost surely, 2^225445523 is an apocalyptic number.

225445523 is a deficient number, since it is larger than the sum of its proper divisors (1).

225445523 is an equidigital number, since it uses as much as digits as its factorization.

225445523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 32.

The square root of 225445523 is about 15014.8434224270. The cubic root of 225445523 is about 608.6213809366.

The spelling of 225445523 in words is "two hundred twenty-five million, four hundred forty-five thousand, five hundred twenty-three".