63725920 has 24 divisors (see below), whose sum is σ = 150552864. Its totient is φ = 25490304.

The previous prime is 63725917. The next prime is 63725923. The reversal of 63725920 is 2952736.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63725917) and next prime (63725923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63725923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198984 + ... + 199303.

It is an arithmetic number, because the mean of its divisors is an integer number (6273036).

Almost surely, 2^63725920 is an apocalyptic number.

It is an amenable number.

63725920 is an abundant number, since it is smaller than the sum of its proper divisors (86826944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63725920 is a wasteful number, since it uses less digits than its factorization.

63725920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398302 (or 398294 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 63725920 is about 7982.8516208182. The cubic root of 63725920 is about 399.4281829527.

The spelling of 63725920 in words is "sixty-three million, seven hundred twenty-five thousand, nine hundred twenty".