12520544200 has 48 divisors (see below), whose sum is σ = 30822642180. Its totient is φ = 4713615360.

The previous prime is 12520544177. The next prime is 12520544227. The reversal of 12520544200 is 244502521.

It can be written as a sum of positive squares in 6 ways, for example, as 7479828196 + 5040716004 = 86486^2 + 70998^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 1837857 + ... + 1844656.

Almost surely, 2^12520544200 is an apocalyptic number.

12520544200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12520544200 is an abundant number, since it is smaller than the sum of its proper divisors (18302097980).

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

12520544200 is a wasteful number, since it uses less digits than its factorization.

12520544200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682546 (or 3682537 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The spelling of 12520544200 in words is "twelve billion, five hundred twenty million, five hundred forty-four thousand, two hundred".