147664225 has 24 divisors (see below), whose sum is σ = 191208248. Its totient is φ = 113011200.

The previous prime is 147664213. The next prime is 147664229. The reversal of 147664225 is 522466741.

It can be written as a sum of positive squares in 12 ways, for example, as 12453841 + 135210384 = 3529^2 + 11628^2 .

It is not a de Polignac number, because 147664225 - 2⁹ = 147663713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147664229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55117 + ... + 57733.

Almost surely, 2^147664225 is an apocalyptic number.

It is an amenable number.

147664225 is a deficient number, since it is larger than the sum of its proper divisors (43544023).

147664225 is a wasteful number, since it uses less digits than its factorization.

147664225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725 (or 2720 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 147664225 is about 12151.7169568749. The cubic root of 147664225 is about 528.5569204512.

The spelling of 147664225 in words is "one hundred forty-seven million, six hundred sixty-four thousand, two hundred twenty-five".