25823728 has 40 divisors (see below), whose sum is σ = 57794912. Its totient is φ = 10948608.

The previous prime is 25823671. The next prime is 25823737. The reversal of 25823728 is 82732852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9676 + ... + 12052.

Almost surely, 2^25823728 is an apocalyptic number.

25823728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25823728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28897456).

25823728 is an abundant number, since it is smaller than the sum of its proper divisors (31971184).

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

25823728 is a wasteful number, since it uses less digits than its factorization.

25823728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2483 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 25823728 is about 5081.7052256108. The cubic root of 25823728 is about 295.5785944022.

The spelling of 25823728 in words is "twenty-five million, eight hundred twenty-three thousand, seven hundred twenty-eight".