64125445 has 8 divisors (see below), whose sum is σ = 81477144. Its totient is φ = 48282624.

The previous prime is 64125443. The next prime is 64125487. The reversal of 64125445 is 54452146.

It is a happy number.

64125445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30404196 + 33721249 = 5514^2 + 5807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64125445 - 2¹ = 64125443 is a prime.

It is a super-2 number, since 2×64125445² = 8224145392896050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64125443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377124 + ... + 377293.

It is an arithmetic number, because the mean of its divisors is an integer number (10184643).

Almost surely, 2^64125445 is an apocalyptic number.

It is an amenable number.

64125445 is a deficient number, since it is larger than the sum of its proper divisors (17351699).

64125445 is a wasteful number, since it uses less digits than its factorization.

64125445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754439.

The product of its digits is 19200, while the sum is 31.

The square root of 64125445 is about 8007.8364743544. The cubic root of 64125445 is about 400.2611731843.

The spelling of 64125445 in words is "sixty-four million, one hundred twenty-five thousand, four hundred forty-five".