12508493220 has 36 divisors (see below), whose sum is σ = 37942429980. Its totient is φ = 3335598144.

The previous prime is 12508493197. The next prime is 12508493233. The reversal of 12508493220 is 2239480521.

It is a happy number.

12508493220 is a `hidden beast` number, since 1 + 250 + 84 + 9 + 322 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3485013156 + 9023480064 = 59034^2 + 94992^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34745635 + ... + 34745994.

Almost surely, 2^12508493220 is an apocalyptic number.

12508493220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12508493220 is an abundant number, since it is smaller than the sum of its proper divisors (25433936760).

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

12508493220 is a wasteful number, since it uses less digits than its factorization.

12508493220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69491644 (or 69491639 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 12508493220 in words is "twelve billion, five hundred eight million, four hundred ninety-three thousand, two hundred twenty".