25798001 has 2 divisors, whose sum is σ = 25798002. Its totient is φ = 25798000.

The previous prime is 25797943. The next prime is 25798007. The reversal of 25798001 is 10089752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13512976 + 12285025 = 3676^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 25798001 - 2¹⁰ = 25796977 is a prime.

It is not a weakly prime, because it can be changed into another prime (25798007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12899000 + 12899001.

It is an arithmetic number, because the mean of its divisors is an integer number (12899001).

Almost surely, 2^25798001 is an apocalyptic number.

It is an amenable number.

25798001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25798001 is an equidigital number, since it uses as much as digits as its factorization.

25798001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 25798001 is about 5079.1732594980. The cubic root of 25798001 is about 295.4804046393.

The spelling of 25798001 in words is "twenty-five million, seven hundred ninety-eight thousand, one".