12605255220 has 48 divisors (see below), whose sum is σ = 35311469760. Its totient is φ = 3359805696.

The previous prime is 12605255219. The next prime is 12605255227. The reversal of 12605255220 is 2255250621.

It is a super-2 number, since 2×12605255220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605255227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80391 + ... + 177969.

It is an arithmetic number, because the mean of its divisors is an integer number (735655620).

Almost surely, 2^12605255220 is an apocalyptic number.

12605255220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12605255220 is an abundant number, since it is smaller than the sum of its proper divisors (22706214540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12605255220 is a wasteful number, since it uses less digits than its factorization.

12605255220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99744 (or 99742 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 12605255220 in words is "twelve billion, six hundred five million, two hundred fifty-five thousand, two hundred twenty".