632644225 has 6 divisors (see below), whose sum is σ = 784478870. Its totient is φ = 506115360.

The previous prime is 632644223. The next prime is 632644253. The reversal of 632644225 is 522446236.

It can be written as a sum of positive squares in 3 ways, for example, as 151807041 + 480837184 = 12321^2 + 21928^2 .

It is not a de Polignac number, because 632644225 - 2¹ = 632644223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (632644223) 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 5 ways as a sum of consecutive naturals, for example, 12652860 + ... + 12652909.

Almost surely, 2^632644225 is an apocalyptic number.

It is an amenable number.

632644225 is a deficient number, since it is larger than the sum of its proper divisors (151834645).

632644225 is a wasteful number, since it uses less digits than its factorization.

632644225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25305779 (or 25305774 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 632644225 is about 25152.4198637030. The cubic root of 632644225 is about 858.4595756964.

The spelling of 632644225 in words is "six hundred thirty-two million, six hundred forty-four thousand, two hundred twenty-five".