25939712 has 36 divisors (see below), whose sum is σ = 54513480. Its totient is φ = 12284928.

The previous prime is 25939709. The next prime is 25939721. The reversal of 25939712 is 21793952.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 in 3 ways as a sum of consecutive naturals, for example, 2198 + ... + 7530.

Almost surely, 2^25939712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25939712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27256740).

25939712 is an abundant number, since it is smaller than the sum of its proper divisors (28573768).

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

25939712 is an equidigital number, since it uses as much as digits as its factorization.

25939712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368 (or 5354 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 25939712 is about 5093.1043578548. The cubic root of 25939712 is about 296.0204514722.

Subtracting from 25939712 its reverse (21793952), we obtain a triangular number (4145760 = T₂₈₇₉).

The spelling of 25939712 in words is "twenty-five million, nine hundred thirty-nine thousand, seven hundred twelve".