12549125419 has 16 divisors (see below), whose sum is σ = 13012322400. Its totient is φ = 12096635904.

The previous prime is 12549125299. The next prime is 12549125423. The reversal of 12549125419 is 91452194521.

It is a cyclic number.

It is not a de Polignac number, because 12549125419 - 2²¹ = 12547028267 is a prime.

It is a super-2 number, since 2×12549125419² (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 (12549125429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613749 + ... + 633865.

It is an arithmetic number, because the mean of its divisors is an integer number (813270150).

Almost surely, 2^12549125419 is an apocalyptic number.

12549125419 is a deficient number, since it is larger than the sum of its proper divisors (463196981).

12549125419 is a wasteful number, since it uses less digits than its factorization.

12549125419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20382.

The product of its digits is 129600, while the sum is 43.

The spelling of 12549125419 in words is "twelve billion, five hundred forty-nine million, one hundred twenty-five thousand, four hundred nineteen".