12925009 has 4 divisors (see below), whose sum is σ = 13080816. Its totient is φ = 12769204.

The previous prime is 12924979. The next prime is 12925013. The reversal of 12925009 is 90052921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12925009 - 2¹⁹ = 12400721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12925019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77779 + ... + 77944.

It is an arithmetic number, because the mean of its divisors is an integer number (3270204).

Almost surely, 2^12925009 is an apocalyptic number.

It is an amenable number.

12925009 is a deficient number, since it is larger than the sum of its proper divisors (155807).

12925009 is an equidigital number, since it uses as much as digits as its factorization.

12925009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155806.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 12925009 is about 3595.1368541406. The cubic root of 12925009 is about 234.6804711214.

The spelling of 12925009 in words is "twelve million, nine hundred twenty-five thousand, nine".