1522225 has 6 divisors (see below), whose sum is σ = 1887590. Its totient is φ = 1217760.

The previous prime is 1522201. The next prime is 1522249. The reversal of 1522225 is 5222251.

It is an interprime number because it is at equal distance from previous prime (1522201) and next prime (1522249).

It can be written as a sum of positive squares in 3 ways, for example, as 1936 + 1520289 = 44^2 + 1233^2 .

It is not a de Polignac number, because 1522225 - 2⁷ = 1522097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30420 + ... + 30469.

2^1522225 is an apocalyptic number.

It is an amenable number.

1522225 is a deficient number, since it is larger than the sum of its proper divisors (365365).

1522225 is an equidigital number, since it uses as much as digits as its factorization.

1522225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60899 (or 60894 counting only the distinct ones).

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

The square root of 1522225 is about 1233.7848272693. The cubic root of 1522225 is about 115.0340164022.

Adding to 1522225 its reverse (5222251), we get a palindrome (6744476).

The spelling of 1522225 in words is "one million, five hundred twenty-two thousand, two hundred twenty-five".