842525897 has 2 divisors, whose sum is σ = 842525898. Its totient is φ = 842525896.

The previous prime is 842525881. The next prime is 842525921. The reversal of 842525897 is 798525248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650454016 + 192071881 = 25504^2 + 13859^2 .

It is a cyclic number.

It is not a de Polignac number, because 842525897 - 2⁴ = 842525881 is a prime.

It is not a weakly prime, because it can be changed into another prime (842525297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421262948 + 421262949.

It is an arithmetic number, because the mean of its divisors is an integer number (421262949).

Almost surely, 2^842525897 is an apocalyptic number.

It is an amenable number.

842525897 is a deficient number, since it is larger than the sum of its proper divisors (1).

842525897 is an equidigital number, since it uses as much as digits as its factorization.

842525897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 50.

The square root of 842525897 is about 29026.2966463171. The cubic root of 842525897 is about 944.4835964356.

The spelling of 842525897 in words is "eight hundred forty-two million, five hundred twenty-five thousand, eight hundred ninety-seven".