12565013330 has 16 divisors (see below), whose sum is σ = 22635448920. Its totient is φ = 5021910912.

The previous prime is 12565013297. The next prime is 12565013339. The reversal of 12565013330 is 3331056521.

It can be written as a sum of positive squares in 4 ways, for example, as 11802866881 + 762146449 = 108641^2 + 27607^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12565013293 and 12565013302.

It is not an unprimeable number, because it can be changed into a prime (12565013339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498899 + ... + 523478.

Almost surely, 2^12565013330 is an apocalyptic number.

12565013330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12565013330 is a deficient number, since it is larger than the sum of its proper divisors (10070435590).

12565013330 is a wasteful number, since it uses less digits than its factorization.

12565013330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023613.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 12565013330 its reverse (3331056521), we get a palindrome (15896069851).

The spelling of 12565013330 in words is "twelve billion, five hundred sixty-five million, thirteen thousand, three hundred thirty".