12025656109 has 8 divisors (see below), whose sum is σ = 12237799392. Its totient is φ = 11815114320.

The previous prime is 12025656091. The next prime is 12025656143. The reversal of 12025656109 is 90165652021.

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 12025656109 - 2⁷ = 12025655981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12025656199) 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, 385219 + ... + 415264.

It is an arithmetic number, because the mean of its divisors is an integer number (1529724924).

Almost surely, 2^12025656109 is an apocalyptic number.

It is an amenable number.

12025656109 is a deficient number, since it is larger than the sum of its proper divisors (212143283).

12025656109 is an equidigital number, since it uses as much as digits as its factorization.

12025656109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800747.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 12025656109 in words is "twelve billion, twenty-five million, six hundred fifty-six thousand, one hundred nine".