64025239 has 4 divisors (see below), whose sum is σ = 64043056. Its totient is φ = 64007424.

The previous prime is 64025201. The next prime is 64025249. The reversal of 64025239 is 93252046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93252046 = 2 ⋅46626023.

It is a cyclic number.

It is not a de Polignac number, because 64025239 - 2¹³ = 64017047 is a prime.

It is a super-3 number, since 3×64025239³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64025239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64025249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419 + ... + 11404.

It is an arithmetic number, because the mean of its divisors is an integer number (16010764).

Almost surely, 2^64025239 is an apocalyptic number.

64025239 is a deficient number, since it is larger than the sum of its proper divisors (17817).

64025239 is a wasteful number, since it uses less digits than its factorization.

64025239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17816.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 64025239 is about 8001.5772820113. The cubic root of 64025239 is about 400.0525743395.

The spelling of 64025239 in words is "sixty-four million, twenty-five thousand, two hundred thirty-nine".