12912825 has 12 divisors (see below), whose sum is σ = 21349328. Its totient is φ = 6886800.

The previous prime is 12912773. The next prime is 12912847. The reversal of 12912825 is 52821921.

It is not a de Polignac number, because 12912825 - 2¹⁷ = 12781753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12912792 and 12912801.

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, 86011 + ... + 86160.

Almost surely, 2^12912825 is an apocalyptic number.

12912825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12912825 is a deficient number, since it is larger than the sum of its proper divisors (8436503).

12912825 is a wasteful number, since it uses less digits than its factorization.

12912825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172184 (or 172179 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 12912825 is about 3593.4419433184. The cubic root of 12912825 is about 234.6067059683.

The spelling of 12912825 in words is "twelve million, nine hundred twelve thousand, eight hundred twenty-five".