225002989 has 2 divisors, whose sum is σ = 225002990. Its totient is φ = 225002988.

The previous prime is 225002983. The next prime is 225002993. The reversal of 225002989 is 989200522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183142089 + 41860900 = 13533^2 + 6470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225002989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225002983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112501494 + 112501495.

It is an arithmetic number, because the mean of its divisors is an integer number (112501495).

Almost surely, 2^225002989 is an apocalyptic number.

It is an amenable number.

225002989 is a deficient number, since it is larger than the sum of its proper divisors (1).

225002989 is an equidigital number, since it uses as much as digits as its factorization.

225002989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 225002989 is about 15000.0996330024. The cubic root of 225002989 is about 608.2228928346. Note that the first 3 decimals are identical.

The spelling of 225002989 in words is "two hundred twenty-five million, two thousand, nine hundred eighty-nine".