63706397225 has 24 divisors (see below), whose sum is σ = 83808445440. Its totient is φ = 47902518720.

The previous prime is 63706397207. The next prime is 63706397273. The reversal of 63706397225 is 52279360736.

It is a happy number.

It is not a de Polignac number, because 63706397225 - 2⁸ = 63706396969 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 467702 + ... + 588351.

It is an arithmetic number, because the mean of its divisors is an integer number (3492018560).

Almost surely, 2^63706397225 is an apocalyptic number.

It is an amenable number.

63706397225 is a deficient number, since it is larger than the sum of its proper divisors (20102048215).

63706397225 is a wasteful number, since it uses less digits than its factorization.

63706397225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056209 (or 1056204 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 63706397225 in words is "sixty-three billion, seven hundred six million, three hundred ninety-seven thousand, two hundred twenty-five".