12905632241 has 4 divisors (see below), whose sum is σ = 12907054452. Its totient is φ = 12904210032.

The previous prime is 12905632163. The next prime is 12905632253. The reversal of 12905632241 is 14223650921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14223650921 = 113 ⋅125873017.

It can be written as a sum of positive squares in 2 ways, for example, as 4744316641 + 8161315600 = 68879^2 + 90340^2 .

It is a cyclic number.

It is not a de Polignac number, because 12905632241 - 2³⁰ = 11831890417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12905632291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697406 + ... + 715671.

It is an arithmetic number, because the mean of its divisors is an integer number (3226763613).

Almost surely, 2^12905632241 is an apocalyptic number.

It is an amenable number.

12905632241 is a deficient number, since it is larger than the sum of its proper divisors (1422211).

12905632241 is an equidigital number, since it uses as much as digits as its factorization.

12905632241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422210.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 12905632241 in words is "twelve billion, nine hundred five million, six hundred thirty-two thousand, two hundred forty-one".