1525323521312 has 12 divisors (see below), whose sum is σ = 3002980682646. Its totient is φ = 762661760640.

The previous prime is 1525323521311. The next prime is 1525323521339. The reversal of 1525323521312 is 2131253235251.

It can be written as a sum of positive squares in only one way, i.e., 1032345409936 + 492978111376 = 1016044^2 + 702124^2 .

It is a super-2 number, since 2×1525323521312² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1525323521311) by changing a digit.

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 as a sum of consecutive naturals, namely, 23833179989 + ... + 23833180052.

Almost surely, 2^{1525323521312} is an apocalyptic number.

It is an amenable number.

1525323521312 is a deficient number, since it is larger than the sum of its proper divisors (1477657161334).

1525323521312 is an equidigital number, since it uses as much as digits as its factorization.

1525323521312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47666360051 (or 47666360043 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

Adding to 1525323521312 its reverse (2131253235251), we get a palindrome (3656576756563).

The spelling of 1525323521312 in words is "one trillion, five hundred twenty-five billion, three hundred twenty-three million, five hundred twenty-one thousand, three hundred twelve".