12405516251 has 8 divisors (see below), whose sum is σ = 12920251104. Its totient is φ = 11900226240.

The previous prime is 12405516223. The next prime is 12405516257. The reversal of 12405516251 is 15261550421.

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 12405516251 - 2¹⁴ = 12405499867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12405516257) 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, 2358530 + ... + 2363783.

It is an arithmetic number, because the mean of its divisors is an integer number (1615031388).

Almost surely, 2^12405516251 is an apocalyptic number.

12405516251 is a deficient number, since it is larger than the sum of its proper divisors (514734853).

12405516251 is an equidigital number, since it uses as much as digits as its factorization.

12405516251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722421.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 12405516251 in words is "twelve billion, four hundred five million, five hundred sixteen thousand, two hundred fifty-one".