39825700997 has 2 divisors, whose sum is σ = 39825700998. Its totient is φ = 39825700996.

The previous prime is 39825700909. The next prime is 39825701011. The reversal of 39825700997 is 79900752893.

39825700997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32227789441 + 7597911556 = 179521^2 + 87166^2 .

It is a cyclic number.

It is not a de Polignac number, because 39825700997 - 2¹⁶ = 39825635461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39825700297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19912850498 + 19912850499.

It is an arithmetic number, because the mean of its divisors is an integer number (19912850499).

Almost surely, 2^39825700997 is an apocalyptic number.

It is an amenable number.

39825700997 is a deficient number, since it is larger than the sum of its proper divisors (1).

39825700997 is an equidigital number, since it uses as much as digits as its factorization.

39825700997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8573040, while the sum is 59.

The spelling of 39825700997 in words is "thirty-nine billion, eight hundred twenty-five million, seven hundred thousand, nine hundred ninety-seven".