12855024400 has 45 divisors (see below), whose sum is σ = 30889644991. Its totient is φ = 5141102720.

The previous prime is 12855024373. The next prime is 12855024409. The reversal of 12855024400 is 442055821.

The square root of 12855024400 is 113380.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2085566224 + 10769458176 = 45668^2 + 103776^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12855024409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2264766 + ... + 2270434.

Almost surely, 2^12855024400 is an apocalyptic number.

12855024400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12855024400 is the 113380-th square number.

It is an amenable number.

12855024400 is an abundant number, since it is smaller than the sum of its proper divisors (18034620591).

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

12855024400 is an frugal number, since it uses more digits than its factorization.

12855024400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11356 (or 5676 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 12855024400 in words is "twelve billion, eight hundred fifty-five million, twenty-four thousand, four hundred".