63172825 has 6 divisors (see below), whose sum is σ = 78334334. Its totient is φ = 50538240.

The previous prime is 63172819. The next prime is 63172829. The reversal of 63172825 is 52827136.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3125824 + 60047001 = 1768^2 + 7749^2 .

It is not a de Polignac number, because 63172825 - 2⁵ = 63172793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63172829) 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, 1263432 + ... + 1263481.

Almost surely, 2^63172825 is an apocalyptic number.

It is an amenable number.

63172825 is a deficient number, since it is larger than the sum of its proper divisors (15161509).

63172825 is a wasteful number, since it uses less digits than its factorization.

63172825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526923 (or 2526918 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 63172825 is about 7948.1334286737. The cubic root of 63172825 is about 398.2692407320.

The spelling of 63172825 in words is "sixty-three million, one hundred seventy-two thousand, eight hundred twenty-five".