2521225 has 12 divisors (see below), whose sum is σ = 3573184. Its totient is φ = 1728720.

The previous prime is 2521223. The next prime is 2521249. The reversal of 2521225 is 5221252.

It is not a de Polignac number, because 2521225 - 2¹ = 2521223 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2521223) 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, 7029 + ... + 7378.

2^2521225 is an apocalyptic number.

2521225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521225 is a deficient number, since it is larger than the sum of its proper divisors (1051959).

2521225 is a wasteful number, since it uses less digits than its factorization.

2521225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14424 (or 14419 counting only the distinct ones).

The product of its digits is 400, while the sum is 19.

The square root of 2521225 is about 1587.8365784929. The cubic root of 2521225 is about 136.1038890456.

Adding to 2521225 its reverse (5221252), we get a palindrome (7742477).

The spelling of 2521225 in words is "two million, five hundred twenty-one thousand, two hundred twenty-five".