12510409 has 2 divisors, whose sum is σ = 12510410. Its totient is φ = 12510408.

The previous prime is 12510373. The next prime is 12510427. The reversal of 12510409 is 90401521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 455625 = 3472^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 12510409 - 2¹¹ = 12508361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12510409.

It is not a weakly prime, because it can be changed into another prime (12510109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6255204 + 6255205.

It is an arithmetic number, because the mean of its divisors is an integer number (6255205).

Almost surely, 2^12510409 is an apocalyptic number.

It is an amenable number.

12510409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12510409 is an equidigital number, since it uses as much as digits as its factorization.

12510409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 12510409 is about 3537.0056545050. The cubic root of 12510409 is about 232.1438428721.

The spelling of 12510409 in words is "twelve million, five hundred ten thousand, four hundred nine".