25970897 has 2 divisors, whose sum is σ = 25970898. Its totient is φ = 25970896.

The previous prime is 25970873. The next prime is 25970909. The reversal of 25970897 is 79807952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25969216 + 1681 = 5096^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 25970897 - 2¹⁰ = 25969873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25970827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12985448 + 12985449.

It is an arithmetic number, because the mean of its divisors is an integer number (12985449).

Almost surely, 2^25970897 is an apocalyptic number.

It is an amenable number.

25970897 is a deficient number, since it is larger than the sum of its proper divisors (1).

25970897 is an equidigital number, since it uses as much as digits as its factorization.

25970897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 25970897 is about 5096.1649306120. The cubic root of 25970897 is about 296.1390302867.

The spelling of 25970897 in words is "twenty-five million, nine hundred seventy thousand, eight hundred ninety-seven".