64163225 has 48 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 41422080.

The previous prime is 64163221. The next prime is 64163227. The reversal of 64163225 is 52236146.

It is not a de Polignac number, because 64163225 - 2² = 64163221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (64163221) 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, 238391 + ... + 238659.

It is an arithmetic number, because the mean of its divisors is an integer number (2008800).

Almost surely, 2^64163225 is an apocalyptic number.

It is an amenable number.

64163225 is a deficient number, since it is larger than the sum of its proper divisors (32259175).

64163225 is a wasteful number, since it uses less digits than its factorization.

64163225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 357 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 64163225 is about 8010.1950662890. The cubic root of 64163225 is about 400.3397634037.

The spelling of 64163225 in words is "sixty-four million, one hundred sixty-three thousand, two hundred twenty-five".