64522525 has 6 divisors (see below), whose sum is σ = 80007962. Its totient is φ = 51618000.

The previous prime is 64522517. The next prime is 64522543. The reversal of 64522525 is 52522546.

It is a happy number.

64522525 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 3 ways, for example, as 7338681 + 57183844 = 2709^2 + 7562^2 .

It is not a de Polignac number, because 64522525 - 2³ = 64522517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1290426 + ... + 1290475.

Almost surely, 2^64522525 is an apocalyptic number.

It is an amenable number.

64522525 is a deficient number, since it is larger than the sum of its proper divisors (15485437).

64522525 is a wasteful number, since it uses less digits than its factorization.

64522525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580911 (or 2580906 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 64522525 is about 8032.5914249388. The cubic root of 64522525 is about 401.0856445242.

The spelling of 64522525 in words is "sixty-four million, five hundred twenty-two thousand, five hundred twenty-five".