825198697 has 2 divisors, whose sum is σ = 825198698. Its totient is φ = 825198696.

The previous prime is 825198653. The next prime is 825198739. The reversal of 825198697 is 796891528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824206681 + 992016 = 28709^2 + 996^2 .

It is a cyclic number.

It is not a de Polignac number, because 825198697 - 2¹¹ = 825196649 is a prime.

It is not a weakly prime, because it can be changed into another prime (825198617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412599348 + 412599349.

It is an arithmetic number, because the mean of its divisors is an integer number (412599349).

Almost surely, 2^825198697 is an apocalyptic number.

It is an amenable number.

825198697 is a deficient number, since it is larger than the sum of its proper divisors (1).

825198697 is an equidigital number, since it uses as much as digits as its factorization.

825198697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 55.

The square root of 825198697 is about 28726.2718952530. The cubic root of 825198697 is about 937.9640168623.

The spelling of 825198697 in words is "eight hundred twenty-five million, one hundred ninety-eight thousand, six hundred ninety-seven".