12565510330 has 16 divisors (see below), whose sum is σ = 22637972520. Its totient is φ = 5021747712.

The previous prime is 12565510291. The next prime is 12565510381. The reversal of 12565510330 is 3301556521.

It can be written as a sum of positive squares in 4 ways, for example, as 6368199601 + 6197310729 = 79801^2 + 78723^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12565510292 and 12565510301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545199 + ... + 567778.

Almost surely, 2^12565510330 is an apocalyptic number.

12565510330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12565510330 is a deficient number, since it is larger than the sum of its proper divisors (10072462190).

12565510330 is a wasteful number, since it uses less digits than its factorization.

12565510330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114113.

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 12565510330 in words is "twelve billion, five hundred sixty-five million, five hundred ten thousand, three hundred thirty".