12545389 has 2 divisors, whose sum is σ = 12545390. Its totient is φ = 12545388.

The previous prime is 12545387. The next prime is 12545411. The reversal of 12545389 is 98354521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9872164 + 2673225 = 3142^2 + 1635^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545389 - 2¹ = 12545387 is a prime.

It is a super-2 number, since 2×12545389² = 314773570322642, which contains 22 as substring.

Together with 12545387, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12545387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272694 + 6272695.

It is an arithmetic number, because the mean of its divisors is an integer number (6272695).

Almost surely, 2^12545389 is an apocalyptic number.

It is an amenable number.

12545389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545389 is an equidigital number, since it uses as much as digits as its factorization.

12545389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The square root of 12545389 is about 3541.9470634102. The cubic root of 12545389 is about 232.3600051351.

The spelling of 12545389 in words is "twelve million, five hundred forty-five thousand, three hundred eighty-nine".