25257601 has 2 divisors, whose sum is σ = 25257602. Its totient is φ = 25257600.

The previous prime is 25257571. The next prime is 25257613. The reversal of 25257601 is 10675252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24760576 + 497025 = 4976^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 25257601 - 2¹¹ = 25255553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25257601.

It is not a weakly prime, because it can be changed into another prime (25257101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628800 + 12628801.

It is an arithmetic number, because the mean of its divisors is an integer number (12628801).

Almost surely, 2^25257601 is an apocalyptic number.

It is an amenable number.

25257601 is a deficient number, since it is larger than the sum of its proper divisors (1).

25257601 is an equidigital number, since it uses as much as digits as its factorization.

25257601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 25257601 is about 5025.6940814180. The cubic root of 25257601 is about 293.4026504860.

The spelling of 25257601 in words is "twenty-five million, two hundred fifty-seven thousand, six hundred one".