2154225 has 12 divisors (see below), whose sum is σ = 3561776. Its totient is φ = 1148880.

The previous prime is 2154209. The next prime is 2154227. The reversal of 2154225 is 5224512.

It is a happy number.

It is not a de Polignac number, because 2154225 - 2⁴ = 2154209 is a prime.

It is a Duffinian number.

2154225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2154227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14287 + ... + 14436.

2^2154225 is an apocalyptic number.

2154225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154225 is a deficient number, since it is larger than the sum of its proper divisors (1407551).

2154225 is a wasteful number, since it uses less digits than its factorization.

2154225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28736 (or 28731 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 2154225 is about 1467.7278358061. The cubic root of 2154225 is about 129.1507761698.

Adding to 2154225 its reverse (5224512), we get a palindrome (7378737).

The spelling of 2154225 in words is "two million, one hundred fifty-four thousand, two hundred twenty-five".