64672225 has 12 divisors (see below), whose sum is σ = 80709244. Its totient is φ = 51405120.

The previous prime is 64672217. The next prime is 64672229. The reversal of 64672225 is 52227646.

It can be written as a sum of positive squares in 6 ways, for example, as 6927424 + 57744801 = 2632^2 + 7599^2 .

It is not a de Polignac number, because 64672225 - 2³ = 64672217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64672229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4314 + ... + 12163.

Almost surely, 2^64672225 is an apocalyptic number.

It is an amenable number.

64672225 is a deficient number, since it is larger than the sum of its proper divisors (16037019).

64672225 is a wasteful number, since it uses less digits than its factorization.

64672225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16644 (or 16639 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 64672225 is about 8041.9043142778. The cubic root of 64672225 is about 401.3955938814.

The spelling of 64672225 in words is "sixty-four million, six hundred seventy-two thousand, two hundred twenty-five".