25981326 has 48 divisors (see below), whose sum is σ = 66085344. Its totient is φ = 7221312.

The previous prime is 25981309. The next prime is 25981339. The reversal of 25981326 is 62318952.

25981326 is a `hidden beast` number, since 259 + 81 + 326 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1876 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (1376778).

Almost surely, 2^25981326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25981326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33042672).

25981326 is an abundant number, since it is smaller than the sum of its proper divisors (40104018).

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

25981326 is a wasteful number, since it uses less digits than its factorization.

25981326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625 (or 5622 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 25981326 is about 5097.1880483263. The cubic root of 25981326 is about 296.1786646594.

The spelling of 25981326 in words is "twenty-five million, nine hundred eighty-one thousand, three hundred twenty-six".