25439132 has 6 divisors (see below), whose sum is σ = 44518488. Its totient is φ = 12719564.

The previous prime is 25439111. The next prime is 25439149. The reversal of 25439132 is 23193452.

It is a junction number, because it is equal to n+sod(n) for n = 25439095 and 25439104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3179888 + ... + 3179895.

It is an arithmetic number, because the mean of its divisors is an integer number (7419748).

Almost surely, 2^25439132 is an apocalyptic number.

It is an amenable number.

25439132 is a deficient number, since it is larger than the sum of its proper divisors (19079356).

25439132 is a wasteful number, since it uses less digits than its factorization.

25439132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359787 (or 6359785 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 25439132 is about 5043.7220383364. The cubic root of 25439132 is about 294.1038860354.

The spelling of 25439132 in words is "twenty-five million, four hundred thirty-nine thousand, one hundred thirty-two".