1522415225 has 12 divisors (see below), whose sum is σ = 1896118224. Its totient is φ = 1212562320.

The previous prime is 1522415207. The next prime is 1522415311. The reversal of 1522415225 is 5225142251.

It is a happy number.

1522415225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1522415225 - 2¹⁸ = 1522153081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128459 + ... + 139808.

It is an arithmetic number, because the mean of its divisors is an integer number (158009852).

Almost surely, 2^1522415225 is an apocalyptic number.

It is an amenable number.

1522415225 is a deficient number, since it is larger than the sum of its proper divisors (373702999).

1522415225 is a wasteful number, since it uses less digits than its factorization.

1522415225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268504 (or 268499 counting only the distinct ones).

The product of its digits is 8000, while the sum is 29.

The square root of 1522415225 is about 39018.1396916870. The cubic root of 1522415225 is about 1150.3880794838.

Adding to 1522415225 its reverse (5225142251), we get a palindrome (6747557476).

The spelling of 1522415225 in words is "one billion, five hundred twenty-two million, four hundred fifteen thousand, two hundred twenty-five".