12501309 has 8 divisors (see below), whose sum is σ = 16686432. Its totient is φ = 8325200.

The previous prime is 12501283. The next prime is 12501311. The reversal of 12501309 is 90310521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12501309 - 2⁸ = 12501053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302 + ... + 5504.

It is an arithmetic number, because the mean of its divisors is an integer number (2085804).

Almost surely, 2^12501309 is an apocalyptic number.

It is an amenable number.

12501309 is a deficient number, since it is larger than the sum of its proper divisors (4185123).

12501309 is a wasteful number, since it uses less digits than its factorization.

12501309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 12501309 is about 3535.7190216418. The cubic root of 12501309 is about 232.0875425176.

The spelling of 12501309 in words is "twelve million, five hundred one thousand, three hundred nine".