25923840 has 144 divisors (see below), whose sum is σ = 85259328. Its totient is φ = 6709248.

The previous prime is 25923839. The next prime is 25923851. The reversal of 25923840 is 4832952.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165042 + ... + 165198.

Almost surely, 2^25923840 is an apocalyptic number.

25923840 is a gapful number since it is divisible by the number (20) 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 25923840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42629664).

25923840 is an abundant number, since it is smaller than the sum of its proper divisors (59335488).

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

25923840 is a wasteful number, since it uses less digits than its factorization.

25923840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 25923840 is about 5091.5459341933. The cubic root of 25923840 is about 295.9600627881.

The spelling of 25923840 in words is "twenty-five million, nine hundred twenty-three thousand, eight hundred forty".