25903601 has 2 divisors, whose sum is σ = 25903602. Its totient is φ = 25903600.

The previous prime is 25903481. The next prime is 25903637. The reversal of 25903601 is 10630952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14070001 + 11833600 = 3751^2 + 3440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25903601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25900601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12951800 + 12951801.

It is an arithmetic number, because the mean of its divisors is an integer number (12951801).

Almost surely, 2^25903601 is an apocalyptic number.

It is an amenable number.

25903601 is a deficient number, since it is larger than the sum of its proper divisors (1).

25903601 is an equidigital number, since it uses as much as digits as its factorization.

25903601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 25903601 is about 5089.5580358220. The cubic root of 25903601 is about 295.8830230801.

The spelling of 25903601 in words is "twenty-five million, nine hundred three thousand, six hundred one".