12255722506 has 8 divisors (see below), whose sum is σ = 18407870820. Its totient is φ = 6119765568.

The previous prime is 12255722503. The next prime is 12255722527. The reversal of 12255722506 is 60522755221.

It can be written as a sum of positive squares in 2 ways, for example, as 11078615025 + 1177107481 = 105255^2 + 34309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12255722503) 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, 4045951 + ... + 4048978.

Almost surely, 2^12255722506 is an apocalyptic number.

12255722506 is a deficient number, since it is larger than the sum of its proper divisors (6152148314).

12255722506 is an equidigital number, since it uses as much as digits as its factorization.

12255722506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8095688.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 12255722506 in words is "twelve billion, two hundred fifty-five million, seven hundred twenty-two thousand, five hundred six".