25707001 has 2 divisors, whose sum is σ = 25707002. Its totient is φ = 25707000.

The previous prime is 25706999. The next prime is 25707007. The reversal of 25707001 is 10070752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15594601 + 10112400 = 3949^2 + 3180^2 .

It is a cyclic number.

It is not a de Polignac number, because 25707001 - 2¹ = 25706999 is a prime.

Together with 25706999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25707007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12853500 + 12853501.

It is an arithmetic number, because the mean of its divisors is an integer number (12853501).

Almost surely, 2^25707001 is an apocalyptic number.

It is an amenable number.

25707001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25707001 is an equidigital number, since it uses as much as digits as its factorization.

25707001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 25707001 is about 5070.2071949773. The cubic root of 25707001 is about 295.1325689714.

Adding to 25707001 its reverse (10070752), we get a palindrome (35777753).

The spelling of 25707001 in words is "twenty-five million, seven hundred seven thousand, one".