12855825 has 36 divisors (see below), whose sum is σ = 24387948. Its totient is φ = 6451200.

The previous prime is 12855823. The next prime is 12855833. The reversal of 12855825 is 52855821.

It can be written as a sum of positive squares in 6 ways, for example, as 239121 + 12616704 = 489^2 + 3552^2 .

It is not a de Polignac number, because 12855825 - 2¹ = 12855823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12855825.

It is not an unprimeable number, because it can be changed into a prime (12855823) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2145 + ... + 5505.

It is an arithmetic number, because the mean of its divisors is an integer number (677443).

Almost surely, 2^12855825 is an apocalyptic number.

12855825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12855825 is a deficient number, since it is larger than the sum of its proper divisors (11532123).

12855825 is a wasteful number, since it uses less digits than its factorization.

12855825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394 (or 3386 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 12855825 is about 3585.5020568952. The cubic root of 12855825 is about 234.2609952214.

The spelling of 12855825 in words is "twelve million, eight hundred fifty-five thousand, eight hundred twenty-five".