63965225 has 6 divisors (see below), whose sum is σ = 79316910. Its totient is φ = 51172160.

The previous prime is 63965221. The next prime is 63965227. The reversal of 63965225 is 52256936.

It can be written as a sum of positive squares in 3 ways, for example, as 173056 + 63792169 = 416^2 + 7987^2 .

It is not a de Polignac number, because 63965225 - 2² = 63965221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63965221) 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, 1279280 + ... + 1279329.

It is an arithmetic number, because the mean of its divisors is an integer number (13219485).

Almost surely, 2^63965225 is an apocalyptic number.

It is an amenable number.

63965225 is a deficient number, since it is larger than the sum of its proper divisors (15351685).

63965225 is a wasteful number, since it uses less digits than its factorization.

63965225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558619 (or 2558614 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The square root of 63965225 is about 7997.8262671804. The cubic root of 63965225 is about 399.9275389576.

The spelling of 63965225 in words is "sixty-three million, nine hundred sixty-five thousand, two hundred twenty-five".