25759920 has 80 divisors (see below), whose sum is σ = 80432352. Its totient is φ = 6819840.

The previous prime is 25759919. The next prime is 25759939. The reversal of 25759920 is 2995752.

It is a tau number, because it is divible by the number of its divisors (80).

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, 43144 + ... + 43736.

Almost surely, 2^25759920 is an apocalyptic number.

25759920 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 25759920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40216176).

25759920 is an abundant number, since it is smaller than the sum of its proper divisors (54672432).

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

25759920 is a wasteful number, since it uses less digits than its factorization.

25759920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 25759920 is about 5075.4231350696. The cubic root of 25759920 is about 295.3349446562.

The spelling of 25759920 in words is "twenty-five million, seven hundred fifty-nine thousand, nine hundred twenty".