63847504225 has 12 divisors (see below), whose sum is σ = 79310063340. Its totient is φ = 50988224000.

The previous prime is 63847504219. The next prime is 63847504243. The reversal of 63847504225 is 52240574836.

It can be written as a sum of positive squares in 6 ways, for example, as 12869541136 + 50977963089 = 113444^2 + 225783^2 .

It is a de Polignac number, because none of the positive numbers 2^k-63847504225 is a prime.

It is a super-2 number, since 2×63847504225² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2229976 + ... + 2258425.

It is an arithmetic number, because the mean of its divisors is an integer number (6609171945).

Almost surely, 2^63847504225 is an apocalyptic number.

It is an amenable number.

63847504225 is a deficient number, since it is larger than the sum of its proper divisors (15462559115).

63847504225 is a wasteful number, since it uses less digits than its factorization.

63847504225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4488980 (or 4488975 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 46.

The spelling of 63847504225 in words is "sixty-three billion, eight hundred forty-seven million, five hundred four thousand, two hundred twenty-five".