63259795225 has 81 divisors (see below), whose sum is σ = 91933487191. Its totient is φ = 43139852800.

The previous prime is 63259795219. The next prime is 63259795243. The reversal of 63259795225 is 52259795236.

The square root of 63259795225 is 251515.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 53071719129 + 10188076096 = 230373^2 + 100936^2 .

It is not a de Polignac number, because 63259795225 - 2⁷ = 63259795097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 235166391 + ... + 235166659.

Almost surely, 2^63259795225 is an apocalyptic number.

63259795225 is the 251515-th square number.

63259795225 is the 125758-th centered octagonal number.

It is an amenable number.

63259795225 is a deficient number, since it is larger than the sum of its proper divisors (28673691966).

63259795225 is a wasteful number, since it uses less digits than its factorization.

63259795225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 302 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 55.

The spelling of 63259795225 in words is "sixty-three billion, two hundred fifty-nine million, seven hundred ninety-five thousand, two hundred twenty-five".