63725237 has 2 divisors, whose sum is σ = 63725238. Its totient is φ = 63725236.

The previous prime is 63725161. The next prime is 63725257. The reversal of 63725237 is 73252736.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60855601 + 2869636 = 7801^2 + 1694^2 .

It is a cyclic number.

It is not a de Polignac number, because 63725237 - 2⁸ = 63724981 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 63725197 and 63725206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63725257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31862618 + 31862619.

It is an arithmetic number, because the mean of its divisors is an integer number (31862619).

Almost surely, 2^63725237 is an apocalyptic number.

It is an amenable number.

63725237 is a deficient number, since it is larger than the sum of its proper divisors (1).

63725237 is an equidigital number, since it uses as much as digits as its factorization.

63725237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 35.

The square root of 63725237 is about 7982.8088415043. The cubic root of 63725237 is about 399.4267559539.

The spelling of 63725237 in words is "sixty-three million, seven hundred twenty-five thousand, two hundred thirty-seven".