12505361969 has 8 divisors (see below), whose sum is σ = 12587422848. Its totient is φ = 12423386880.

The previous prime is 12505361951. The next prime is 12505361971. The reversal of 12505361969 is 96916350521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12505361969 is a prime.

It is a super-2 number, since 2×12505361969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12505361569) 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, 285329 + ... + 326225.

It is an arithmetic number, because the mean of its divisors is an integer number (1573427856).

Almost surely, 2^12505361969 is an apocalyptic number.

It is an amenable number.

12505361969 is a deficient number, since it is larger than the sum of its proper divisors (82060879).

12505361969 is a wasteful number, since it uses less digits than its factorization.

12505361969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42895.

The product of its (nonzero) digits is 437400, while the sum is 47.

The spelling of 12505361969 in words is "twelve billion, five hundred five million, three hundred sixty-one thousand, nine hundred sixty-nine".