164241225 has 72 divisors (see below), whose sum is σ = 313501760. Its totient is φ = 81959040.

The previous prime is 164241221. The next prime is 164241241. The reversal of 164241225 is 522142461.

164241225 is a `hidden beast` number, since 1 + 642 + 4 + 12 + 2 + 5 = 666.

164241225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164241225 - 2² = 164241221 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (164241221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 440139 + ... + 440511.

Almost surely, 2^164241225 is an apocalyptic number.

164241225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164241225 is a deficient number, since it is larger than the sum of its proper divisors (149260535).

164241225 is a wasteful number, since it uses less digits than its factorization.

164241225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 503 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 164241225 is about 12815.6632680482. The cubic root of 164241225 is about 547.6386088041.

Adding to 164241225 its reverse (522142461), we get a palindrome (686383686).

The spelling of 164241225 in words is "one hundred sixty-four million, two hundred forty-one thousand, two hundred twenty-five".