825505249237 has 2 divisors, whose sum is σ = 825505249238. Its totient is φ = 825505249236.

The previous prime is 825505249207. The next prime is 825505249277. The reversal of 825505249237 is 732942505528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468751099716 + 356754149521 = 684654^2 + 597289^2 .

It is a cyclic number.

It is not a de Polignac number, because 825505249237 - 2⁷ = 825505249109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825505249207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412752624618 + 412752624619.

It is an arithmetic number, because the mean of its divisors is an integer number (412752624619).

Almost surely, 2^825505249237 is an apocalyptic number.

It is an amenable number.

825505249237 is a deficient number, since it is larger than the sum of its proper divisors (1).

825505249237 is an equidigital number, since it uses as much as digits as its factorization.

825505249237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 825505249237 in words is "eight hundred twenty-five billion, five hundred five million, two hundred forty-nine thousand, two hundred thirty-seven".