12523365555 has 8 divisors (see below), whose sum is σ = 20037384912. Its totient is φ = 6679128288.

The previous prime is 12523365527. The next prime is 12523365559. The reversal of 12523365555 is 55556332521.

It is a happy number.

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

It is not a de Polignac number, because 12523365555 - 2¹⁷ = 12523234483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12523365559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417445504 + ... + 417445533.

It is an arithmetic number, because the mean of its divisors is an integer number (2504673114).

Almost surely, 2^12523365555 is an apocalyptic number.

12523365555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12523365555 is a deficient number, since it is larger than the sum of its proper divisors (7514019357).

12523365555 is an equidigital number, since it uses as much as digits as its factorization.

12523365555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834891045.

The product of its digits is 675000, while the sum is 42.

The spelling of 12523365555 in words is "twelve billion, five hundred twenty-three million, three hundred sixty-five thousand, five hundred fifty-five".