63825791 has 2 divisors, whose sum is σ = 63825792. Its totient is φ = 63825790.

The previous prime is 63825767. The next prime is 63825823. The reversal of 63825791 is 19752836.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63825791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63825761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31912895 + 31912896.

It is an arithmetic number, because the mean of its divisors is an integer number (31912896).

Almost surely, 2^63825791 is an apocalyptic number.

63825791 is a deficient number, since it is larger than the sum of its proper divisors (1).

63825791 is an equidigital number, since it uses as much as digits as its factorization.

63825791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 63825791 is about 7989.1045180295. The cubic root of 63825791 is about 399.6367347792.

The spelling of 63825791 in words is "sixty-three million, eight hundred twenty-five thousand, seven hundred ninety-one".