2220525 has 36 divisors (see below), whose sum is σ = 4062240. Its totient is φ = 1159200.

The previous prime is 2220521. The next prime is 2220527. The reversal of 2220525 is 5250222.

It is not a de Polignac number, because 2220525 - 2² = 2220521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220498 and 2220507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15906 + ... + 16044.

It is an arithmetic number, because the mean of its divisors is an integer number (112840).

2^2220525 is an apocalyptic number.

2220525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2220525 is a deficient number, since it is larger than the sum of its proper divisors (1841715).

2220525 is a wasteful number, since it uses less digits than its factorization.

2220525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2220525 is about 1490.1426106249. The cubic root of 2220525 is about 130.4623575758.

Adding to 2220525 its reverse (5250222), we get a palindrome (7470747).

The spelling of 2220525 in words is "two million, two hundred twenty thousand, five hundred twenty-five".