25489782 has 64 divisors (see below), whose sum is σ = 60177600. Its totient is φ = 7983360.

The previous prime is 25489733. The next prime is 25489813. The reversal of 25489782 is 28798452.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 64008 + ... + 64404.

It is an arithmetic number, because the mean of its divisors is an integer number (940275).

Almost surely, 2^25489782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25489782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30088800).

25489782 is an abundant number, since it is smaller than the sum of its proper divisors (34687818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25489782 is a wasteful number, since it uses less digits than its factorization.

25489782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 472 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 25489782 is about 5048.7406350495. The cubic root of 25489782 is about 294.2989462337.

The spelling of 25489782 in words is "twenty-five million, four hundred eighty-nine thousand, seven hundred eighty-two".