63725633 has 2 divisors, whose sum is σ = 63725634. Its totient is φ = 63725632.

The previous prime is 63725621. The next prime is 63725653. The reversal of 63725633 is 33652736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47789569 + 15936064 = 6913^2 + 3992^2 .

It is a cyclic number.

It is not a de Polignac number, because 63725633 - 2⁸ = 63725377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_3769703 and since 63725633 and 3769703 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 63725593 and 63725602.

It is not a weakly prime, because it can be changed into another prime (63725653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31862816 + 31862817.

It is an arithmetic number, because the mean of its divisors is an integer number (31862817).

Almost surely, 2^63725633 is an apocalyptic number.

It is an amenable number.

63725633 is a deficient number, since it is larger than the sum of its proper divisors (1).

63725633 is an equidigital number, since it uses as much as digits as its factorization.

63725633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 35.

The square root of 63725633 is about 7982.8336447655. The cubic root of 63725633 is about 399.4275833219.

The spelling of 63725633 in words is "sixty-three million, seven hundred twenty-five thousand, six hundred thirty-three".