12509377 has 2 divisors, whose sum is σ = 12509378. Its totient is φ = 12509376.

The previous prime is 12509363. The next prime is 12509381. The reversal of 12509377 is 77390521.

12509377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12278016 + 231361 = 3504^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 12509377 - 2⁷ = 12509249 is a prime.

It is equal to p₈₁₉₂₆₈ and since 12509377 and 819268 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12509317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6254688 + 6254689.

It is an arithmetic number, because the mean of its divisors is an integer number (6254689).

Almost surely, 2^12509377 is an apocalyptic number.

It is an amenable number.

12509377 is a deficient number, since it is larger than the sum of its proper divisors (1).

12509377 is an equidigital number, since it uses as much as digits as its factorization.

12509377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 12509377 is about 3536.8597653851. The cubic root of 12509377 is about 232.1374594135.

Adding to 12509377 its reverse (77390521), we get a palindrome (89899898).

The spelling of 12509377 in words is "twelve million, five hundred nine thousand, three hundred seventy-seven".