2551225 has 24 divisors (see below), whose sum is σ = 3437280. Its totient is φ = 1872000.

The previous prime is 2551223. The next prime is 2551247. The reversal of 2551225 is 5221552.

It is not a de Polignac number, because 2551225 - 2¹ = 2551223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2551196 and 2551205.

It is not an unprimeable number, because it can be changed into a prime (2551223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19410 + ... + 19540.

It is an arithmetic number, because the mean of its divisors is an integer number (143220).

2^2551225 is an apocalyptic number.

2551225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2551225 is a deficient number, since it is larger than the sum of its proper divisors (886055).

2551225 is a wasteful number, since it uses less digits than its factorization.

2551225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 196 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 2551225 is about 1597.2554585914. The cubic root of 2551225 is about 136.6415943166.

Adding to 2551225 its reverse (5221552), we get a palindrome (7772777).

The spelling of 2551225 in words is "two million, five hundred fifty-one thousand, two hundred twenty-five".