1521382225 has 24 divisors (see below), whose sum is σ = 2096865792. Its totient is φ = 1085572800.

The previous prime is 1521382153. The next prime is 1521382259. The reversal of 1521382225 is 5222831251.

It is a de Polignac number, because none of the positive numbers 2^k-1521382225 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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37617 + ... + 66766.

It is an arithmetic number, because the mean of its divisors is an integer number (87369408).

Almost surely, 2^1521382225 is an apocalyptic number.

It is an amenable number.

1521382225 is a deficient number, since it is larger than the sum of its proper divisors (575483567).

1521382225 is a wasteful number, since it uses less digits than its factorization.

1521382225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104457 (or 104452 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 1521382225 is about 39004.9000126907. The cubic root of 1521382225 is about 1150.1278307807.

The spelling of 1521382225 in words is "one billion, five hundred twenty-one million, three hundred eighty-two thousand, two hundred twenty-five".