12409925558 has 4 divisors (see below), whose sum is σ = 18614888340. Its totient is φ = 6204962778.

The previous prime is 12409925533. The next prime is 12409925579. The reversal of 12409925558 is 85552990421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×12409925558³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3102481388 + ... + 3102481391.

It is an arithmetic number, because the mean of its divisors is an integer number (4653722085).

Almost surely, 2^12409925558 is an apocalyptic number.

12409925558 is a deficient number, since it is larger than the sum of its proper divisors (6204962782).

12409925558 is an equidigital number, since it uses as much as digits as its factorization.

12409925558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204962781.

The product of its (nonzero) digits is 1296000, while the sum is 50.

The spelling of 12409925558 in words is "twelve billion, four hundred nine million, nine hundred twenty-five thousand, five hundred fifty-eight".