12899425 has 24 divisors (see below), whose sum is σ = 19945152. Its totient is φ = 8040000.

The previous prime is 12899371. The next prime is 12899431. The reversal of 12899425 is 52499821.

It is not a de Polignac number, because 12899425 - 2¹³ = 12891233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1426 + ... + 5275.

It is an arithmetic number, because the mean of its divisors is an integer number (831048).

Almost surely, 2^12899425 is an apocalyptic number.

It is an amenable number.

12899425 is a deficient number, since it is larger than the sum of its proper divisors (7045727).

12899425 is a wasteful number, since it uses less digits than its factorization.

12899425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729 (or 6724 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 12899425 is about 3591.5769517024. The cubic root of 12899425 is about 234.5255252318.

The spelling of 12899425 in words is "twelve million, eight hundred ninety-nine thousand, four hundred twenty-five".