25898689 has 2 divisors, whose sum is σ = 25898690. Its totient is φ = 25898688.

The previous prime is 25898683. The next prime is 25898693. The reversal of 25898689 is 98689852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 1937664 = 4895^2 + 1392^2 .

It is a cyclic number.

It is not a de Polignac number, because 25898689 - 2¹⁵ = 25865921 is a prime.

It is not a weakly prime, because it can be changed into another prime (25898683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12949344 + 12949345.

It is an arithmetic number, because the mean of its divisors is an integer number (12949345).

Almost surely, 2^25898689 is an apocalyptic number.

It is an amenable number.

25898689 is a deficient number, since it is larger than the sum of its proper divisors (1).

25898689 is an equidigital number, since it uses as much as digits as its factorization.

25898689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 55.

The square root of 25898689 is about 5089.0754563083. The cubic root of 25898689 is about 295.8643195122.

The spelling of 25898689 in words is "twenty-five million, eight hundred ninety-eight thousand, six hundred eighty-nine".