64216125 has 64 divisors (see below), whose sum is σ = 121305600. Its totient is φ = 33508800.

The previous prime is 64216109. The next prime is 64216133. The reversal of 64216125 is 52161246.

64216125 is a `hidden beast` number, since 6 + 42 + 1 + 612 + 5 = 666.

It is not a de Polignac number, because 64216125 - 2⁴ = 64216109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 178696 + ... + 179054.

It is an arithmetic number, because the mean of its divisors is an integer number (1895400).

Almost surely, 2^64216125 is an apocalyptic number.

It is an amenable number.

64216125 is a deficient number, since it is larger than the sum of its proper divisors (57089475).

64216125 is a wasteful number, since it uses less digits than its factorization.

64216125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 420 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 64216125 is about 8013.4964279021. The cubic root of 64216125 is about 400.4497545293.

The spelling of 64216125 in words is "sixty-four million, two hundred sixteen thousand, one hundred twenty-five".