64886625 has 48 divisors (see below), whose sum is σ = 118102608. Its totient is φ = 34272000.

The previous prime is 64886617. The next prime is 64886629. The reversal of 64886625 is 52668846.

It can be written as a sum of positive squares in 8 ways, for example, as 41062464 + 23824161 = 6408^2 + 4881^2 .

It is not a de Polignac number, because 64886625 - 2³ = 64886617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64886629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153915 + ... + 154335.

It is an arithmetic number, because the mean of its divisors is an integer number (2460471).

Almost surely, 2^64886625 is an apocalyptic number.

It is an amenable number.

64886625 is a deficient number, since it is larger than the sum of its proper divisors (53215983).

64886625 is a wasteful number, since it uses less digits than its factorization.

64886625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 566 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 64886625 is about 8055.2234605875. The cubic root of 64886625 is about 401.8386706919.

The spelling of 64886625 in words is "sixty-four million, eight hundred eighty-six thousand, six hundred twenty-five".