63425305 has 4 divisors (see below), whose sum is σ = 76110372. Its totient is φ = 50740240.

The previous prime is 63425281. The next prime is 63425309. The reversal of 63425305 is 50352436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22810176 + 40615129 = 4776^2 + 6373^2 .

It is a de Polignac number, because none of the positive numbers 2^k-63425305 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63425309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6342526 + ... + 6342535.

It is an arithmetic number, because the mean of its divisors is an integer number (19027593).

Almost surely, 2^63425305 is an apocalyptic number.

It is an amenable number.

63425305 is a deficient number, since it is larger than the sum of its proper divisors (12685067).

63425305 is a wasteful number, since it uses less digits than its factorization.

63425305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685066.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 63425305 is about 7964.0005650427. Note that the first 3 decimals coincide. The cubic root of 63425305 is about 398.7991170584.

The spelling of 63425305 in words is "sixty-three million, four hundred twenty-five thousand, three hundred five".