1531322425 has 12 divisors (see below), whose sum is σ = 1899360576. Its totient is φ = 1224722000.

The previous prime is 1531322393. The next prime is 1531322437. The reversal of 1531322425 is 5242231351.

It is not a de Polignac number, because 1531322425 - 2⁵ = 1531322393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1531322393 and 1531322402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128052 + ... + 139498.

It is an arithmetic number, because the mean of its divisors is an integer number (158280048).

Almost surely, 2^1531322425 is an apocalyptic number.

It is an amenable number.

1531322425 is a deficient number, since it is larger than the sum of its proper divisors (368038151).

1531322425 is a wasteful number, since it uses less digits than its factorization.

1531322425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16808 (or 16803 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 1531322425 is about 39132.1150080084. The cubic root of 1531322425 is about 1152.6272447471.

Adding to 1531322425 its reverse (5242231351), we get a palindrome (6773553776).

The spelling of 1531322425 in words is "one billion, five hundred thirty-one million, three hundred twenty-two thousand, four hundred twenty-five".