25685201 has 2 divisors, whose sum is σ = 25685202. Its totient is φ = 25685200.

The previous prime is 25685197. The next prime is 25685203. The reversal of 25685201 is 10258652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 30976 = 5065^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 25685201 - 2² = 25685197 is a prime.

Together with 25685203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25685203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12842600 + 12842601.

It is an arithmetic number, because the mean of its divisors is an integer number (12842601).

Almost surely, 2^25685201 is an apocalyptic number.

It is an amenable number.

25685201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25685201 is an equidigital number, since it uses as much as digits as its factorization.

25685201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 25685201 is about 5068.0569254893. The cubic root of 25685201 is about 295.0491194661.

The spelling of 25685201 in words is "twenty-five million, six hundred eighty-five thousand, two hundred one".