12505737568 has 12 divisors (see below), whose sum is σ = 24620670900. Its totient is φ = 6252868768.

The previous prime is 12505737521. The next prime is 12505737577. The reversal of 12505737568 is 86573750521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195402118 + ... + 195402181.

It is an arithmetic number, because the mean of its divisors is an integer number (2051722575).

Almost surely, 2^12505737568 is an apocalyptic number.

It is an amenable number.

12505737568 is a deficient number, since it is larger than the sum of its proper divisors (12114933332).

12505737568 is an equidigital number, since it uses as much as digits as its factorization.

12505737568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390804309 (or 390804301 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 12505737568 in words is "twelve billion, five hundred five million, seven hundred thirty-seven thousand, five hundred sixty-eight".