25287789 has 12 divisors (see below), whose sum is σ = 35818304. Its totient is φ = 15866304.

The previous prime is 25287781. The next prime is 25287793. The reversal of 25287789 is 98778252.

It is not a de Polignac number, because 25287789 - 2³ = 25287781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25287781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13717 + ... + 15450.

Almost surely, 2^25287789 is an apocalyptic number.

It is an amenable number.

25287789 is a deficient number, since it is larger than the sum of its proper divisors (10530515).

25287789 is a wasteful number, since it uses less digits than its factorization.

25287789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29204 (or 29187 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 25287789 is about 5028.6965507972. The cubic root of 25287789 is about 293.5194960093.

The spelling of 25287789 in words is "twenty-five million, two hundred eighty-seven thousand, seven hundred eighty-nine".