63784225 has 6 divisors (see below), whose sum is σ = 79092470. Its totient is φ = 51027360.

The previous prime is 63784213. The next prime is 63784229. The reversal of 63784225 is 52248736.

It can be written as a sum of positive squares in 3 ways, for example, as 6130576 + 57653649 = 2476^2 + 7593^2 .

It is not a de Polignac number, because 63784225 - 2¹¹ = 63782177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63784229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1275660 + ... + 1275709.

Almost surely, 2^63784225 is an apocalyptic number.

It is an amenable number.

63784225 is a deficient number, since it is larger than the sum of its proper divisors (15308245).

63784225 is a wasteful number, since it uses less digits than its factorization.

63784225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551379 (or 2551374 counting only the distinct ones).

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

The square root of 63784225 is about 7986.5026763910. The cubic root of 63784225 is about 399.5499626058.

It can be divided in two parts, 63784 and 225, that added together give a square (64009 = 253²).

The spelling of 63784225 in words is "sixty-three million, seven hundred eighty-four thousand, two hundred twenty-five".