2225989 has 4 divisors (see below), whose sum is σ = 2256556. Its totient is φ = 2195424.

The previous prime is 2225969. The next prime is 2225999. The reversal of 2225989 is 9895222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9895222 = 2 ⋅4947611.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 1612900 = 783^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225989 - 2²¹ = 128837 is a prime.

It is a Duffinian number.

2225989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15174 + ... + 15319.

It is an arithmetic number, because the mean of its divisors is an integer number (564139).

2^2225989 is an apocalyptic number.

It is an amenable number.

2225989 is a deficient number, since it is larger than the sum of its proper divisors (30567).

2225989 is an equidigital number, since it uses as much as digits as its factorization.

2225989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30566.

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

The square root of 2225989 is about 1491.9748657400. The cubic root of 2225989 is about 130.5692786004.

The spelling of 2225989 in words is "two million, two hundred twenty-five thousand, nine hundred eighty-nine".