25795440 has 120 divisors (see below), whose sum is σ = 94534128. Its totient is φ = 6251520.

The previous prime is 25795439. The next prime is 25795463. The reversal of 25795440 is 4459752.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25795395 and 25795404.

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, 6292 + ... + 9548.

Almost surely, 2^25795440 is an apocalyptic number.

25795440 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 25795440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47267064).

25795440 is an abundant number, since it is smaller than the sum of its proper divisors (68738688).

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

25795440 is a wasteful number, since it uses less digits than its factorization.

25795440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287 (or 3278 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25795440 is about 5078.9211452827. The cubic root of 25795440 is about 295.4706267453.

The spelling of 25795440 in words is "twenty-five million, seven hundred ninety-five thousand, four hundred forty".