25065989 has 8 divisors (see below), whose sum is σ = 27336960. Its totient is φ = 22844016.

The previous prime is 25065913. The next prime is 25065991. The reversal of 25065989 is 98956052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25065989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25065289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11177 + ... + 13230.

It is an arithmetic number, because the mean of its divisors is an integer number (3417120).

Almost surely, 2^25065989 is an apocalyptic number.

It is an amenable number.

25065989 is a deficient number, since it is larger than the sum of its proper divisors (2270971).

25065989 is a wasteful number, since it uses less digits than its factorization.

25065989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24499.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 25065989 is about 5006.5945511895. The cubic root of 25065989 is about 292.6588184676.

The spelling of 25065989 in words is "twenty-five million, sixty-five thousand, nine hundred eighty-nine".