825061637 has 2 divisors, whose sum is σ = 825061638. Its totient is φ = 825061636.

The previous prime is 825061607. The next prime is 825061667. The reversal of 825061637 is 736160528.

It is a balanced prime because it is at equal distance from previous prime (825061607) and next prime (825061667).

It can be written as a sum of positive squares in only one way, i.e., 717918436 + 107143201 = 26794^2 + 10351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825061637 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 825061637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825061607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412530818 + 412530819.

It is an arithmetic number, because the mean of its divisors is an integer number (412530819).

Almost surely, 2^825061637 is an apocalyptic number.

It is an amenable number.

825061637 is a deficient number, since it is larger than the sum of its proper divisors (1).

825061637 is an equidigital number, since it uses as much as digits as its factorization.

825061637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 825061637 is about 28723.8861750982. The cubic root of 825061637 is about 937.9120841311.

The spelling of 825061637 in words is "eight hundred twenty-five million, sixty-one thousand, six hundred thirty-seven".