25298689 has 16 divisors (see below), whose sum is σ = 28635264. Its totient is φ = 22176000.

The previous prime is 25298677. The next prime is 25298719. The reversal of 25298689 is 98689252.

It is a cyclic number.

It is not a de Polignac number, because 25298689 - 2¹⁵ = 25265921 is a prime.

It is a Duffinian number.

Its product of digits (622080) is a multiple of the sum of its prime divisors (648).

It is not an unprimeable number, because it can be changed into a prime (25298659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62889 + ... + 63289.

It is an arithmetic number, because the mean of its divisors is an integer number (1789704).

Almost surely, 2^25298689 is an apocalyptic number.

It is an amenable number.

25298689 is a deficient number, since it is larger than the sum of its proper divisors (3336575).

25298689 is a wasteful number, since it uses less digits than its factorization.

25298689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 622080, while the sum is 49.

The square root of 25298689 is about 5029.7802138861. The cubic root of 25298689 is about 293.5616626447.

The spelling of 25298689 in words is "twenty-five million, two hundred ninety-eight thousand, six hundred eighty-nine".