64573825 has 6 divisors (see below), whose sum is σ = 80071574. Its totient is φ = 51659040.

The previous prime is 64573793. The next prime is 64573841. The reversal of 64573825 is 52837546.

It can be written as a sum of positive squares in 3 ways, for example, as 589824 + 63984001 = 768^2 + 7999^2 .

It is not a de Polignac number, because 64573825 - 2⁵ = 64573793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1291452 + ... + 1291501.

Almost surely, 2^64573825 is an apocalyptic number.

It is an amenable number.

64573825 is a deficient number, since it is larger than the sum of its proper divisors (15497749).

64573825 is a wasteful number, since it uses less digits than its factorization.

64573825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582963 (or 2582958 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 64573825 is about 8035.7840314434. The cubic root of 64573825 is about 401.1919135773.

The spelling of 64573825 in words is "sixty-four million, five hundred seventy-three thousand, eight hundred twenty-five".