12605450105 has 8 divisors (see below), whose sum is σ = 16016336712. Its totient is φ = 9491162368.

The previous prime is 12605450101. The next prime is 12605450107. The reversal of 12605450105 is 50105450621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 479916649 + 12125533456 = 21907^2 + 110116^2 .

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 12605450105 - 2² = 12605450101 is a prime.

It is a super-2 number, since 2×12605450105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12605450101) 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, 74149622 + ... + 74149791.

It is an arithmetic number, because the mean of its divisors is an integer number (2002042089).

Almost surely, 2^12605450105 is an apocalyptic number.

It is an amenable number.

12605450105 is a deficient number, since it is larger than the sum of its proper divisors (3410886607).

12605450105 is a wasteful number, since it uses less digits than its factorization.

12605450105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148299435.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 12605450105 in words is "twelve billion, six hundred five million, four hundred fifty thousand, one hundred five".