64345825 has 6 divisors (see below), whose sum is σ = 79788854. Its totient is φ = 51476640.

The previous prime is 64345819. The next prime is 64345847. The reversal of 64345825 is 52854346.

It can be written as a sum of positive squares in 3 ways, for example, as 4004001 + 60341824 = 2001^2 + 7768^2 .

It is not a de Polignac number, because 64345825 - 2¹³ = 64337633 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, 1286892 + ... + 1286941.

Almost surely, 2^64345825 is an apocalyptic number.

It is an amenable number.

64345825 is a deficient number, since it is larger than the sum of its proper divisors (15443029).

64345825 is a wasteful number, since it uses less digits than its factorization.

64345825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573843 (or 2573838 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 64345825 is about 8021.5849431394. The cubic root of 64345825 is about 400.7191749436.

The spelling of 64345825 in words is "sixty-four million, three hundred forty-five thousand, eight hundred twenty-five".