225474989 has 2 divisors, whose sum is σ = 225474990. Its totient is φ = 225474988.

The previous prime is 225474979. The next prime is 225475007. The reversal of 225474989 is 989474522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198330889 + 27144100 = 14083^2 + 5210^2 .

It is a cyclic number.

It is not a de Polignac number, because 225474989 - 2¹² = 225470893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225474979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112737494 + 112737495.

It is an arithmetic number, because the mean of its divisors is an integer number (112737495).

Almost surely, 2^225474989 is an apocalyptic number.

It is an amenable number.

225474989 is a deficient number, since it is larger than the sum of its proper divisors (1).

225474989 is an equidigital number, since it uses as much as digits as its factorization.

225474989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 225474989 is about 15015.8246193807. The cubic root of 225474989 is about 608.6478956294.

The spelling of 225474989 in words is "two hundred twenty-five million, four hundred seventy-four thousand, nine hundred eighty-nine".