12505904519 has 8 divisors (see below), whose sum is σ = 13167825840. Its totient is φ = 11844354816.

The previous prime is 12505904507. The next prime is 12505904603. The reversal of 12505904519 is 91540950521.

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

It is a cyclic number.

It is not a de Polignac number, because 12505904519 - 2⁸ = 12505904263 is a prime.

It is a super-2 number, since 2×12505904519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505904119) 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 in 7 ways as a sum of consecutive naturals, for example, 22442 + ... + 159735.

It is an arithmetic number, because the mean of its divisors is an integer number (1645978230).

Almost surely, 2^12505904519 is an apocalyptic number.

12505904519 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12505904519 is a deficient number, since it is larger than the sum of its proper divisors (661921321).

12505904519 is a wasteful number, since it uses less digits than its factorization.

12505904519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185809.

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 12505904519 in words is "twelve billion, five hundred five million, nine hundred four thousand, five hundred nineteen".