25939456 has 40 divisors (see below), whose sum is σ = 53646120. Its totient is φ = 12515328.

The previous prime is 25939453. The next prime is 25939481. The reversal of 25939456 is 65493952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25939453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13975 + ... + 15721.

It is an arithmetic number, because the mean of its divisors is an integer number (1341153).

Almost surely, 2^25939456 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 25939456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26823060).

25939456 is an abundant number, since it is smaller than the sum of its proper divisors (27706664).

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

25939456 is an equidigital number, since it uses as much as digits as its factorization.

25939456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794 (or 1778 counting only the distinct ones).

The product of its digits is 291600, while the sum is 43.

The square root of 25939456 is about 5093.0792257730. The cubic root of 25939456 is about 296.0194776567.

The spelling of 25939456 in words is "twenty-five million, nine hundred thirty-nine thousand, four hundred fifty-six".