64275265 has 4 divisors (see below), whose sum is σ = 77130324. Its totient is φ = 51420208.

The previous prime is 64275257. The next prime is 64275287. The reversal of 64275265 is 56257246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56257246 = 2 ⋅28128623.

It can be written as a sum of positive squares in 2 ways, for example, as 20079361 + 44195904 = 4481^2 + 6648^2 .

It is a cyclic number.

It is not a de Polignac number, because 64275265 - 2³ = 64275257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6427522 + ... + 6427531.

It is an arithmetic number, because the mean of its divisors is an integer number (19282581).

Almost surely, 2^64275265 is an apocalyptic number.

It is an amenable number.

64275265 is a deficient number, since it is larger than the sum of its proper divisors (12855059).

64275265 is a wasteful number, since it uses less digits than its factorization.

64275265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12855058.

The product of its digits is 100800, while the sum is 37.

The square root of 64275265 is about 8017.1856034397. The cubic root of 64275265 is about 400.5726485429.

The spelling of 64275265 in words is "sixty-four million, two hundred seventy-five thousand, two hundred sixty-five".