825949204397 has 2 divisors, whose sum is σ = 825949204398. Its totient is φ = 825949204396.

The previous prime is 825949204319. The next prime is 825949204403. The reversal of 825949204397 is 793402949528.

825949204397 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., 438176478601 + 387772725796 = 661949^2 + 622714^2 .

It is a cyclic number.

It is not a de Polignac number, because 825949204397 - 2⁸ = 825949204141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825949204897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412974602198 + 412974602199.

It is an arithmetic number, because the mean of its divisors is an integer number (412974602199).

Almost surely, 2^825949204397 is an apocalyptic number.

It is an amenable number.

825949204397 is a deficient number, since it is larger than the sum of its proper divisors (1).

825949204397 is an equidigital number, since it uses as much as digits as its factorization.

825949204397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 825949204397 in words is "eight hundred twenty-five billion, nine hundred forty-nine million, two hundred four thousand, three hundred ninety-seven".