64925239 has 2 divisors, whose sum is σ = 64925240. Its totient is φ = 64925238.

The previous prime is 64925221. The next prime is 64925279. The reversal of 64925239 is 93252946.

It is an a-pointer prime, because the next prime (64925279) can be obtained adding 64925239 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64925239 - 2⁵ = 64925207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64925219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32462619 + 32462620.

It is an arithmetic number, because the mean of its divisors is an integer number (32462620).

Almost surely, 2^64925239 is an apocalyptic number.

64925239 is a deficient number, since it is larger than the sum of its proper divisors (1).

64925239 is an equidigital number, since it uses as much as digits as its factorization.

64925239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 64925239 is about 8057.6199339507. The cubic root of 64925239 is about 401.9183662196.

The spelling of 64925239 in words is "sixty-four million, nine hundred twenty-five thousand, two hundred thirty-nine".