25940560 has 40 divisors (see below), whose sum is σ = 61174656. Its totient is φ = 10227840.

The previous prime is 25940557. The next prime is 25940561. The reversal of 25940560 is 6504952.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×25940560² = 1345825306227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25940561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3397 + ... + 7963.

Almost surely, 2^25940560 is an apocalyptic number.

25940560 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 25940560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30587328).

25940560 is an abundant number, since it is smaller than the sum of its proper divisors (35234096).

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

25940560 is a wasteful number, since it uses less digits than its factorization.

25940560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651 (or 4645 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 25940560 is about 5093.1876069903. The cubic root of 25940560 is about 296.0236771905.

The spelling of 25940560 in words is "twenty-five million, nine hundred forty thousand, five hundred sixty".