25716040 has 64 divisors (see below), whose sum is σ = 68428800. Its totient is φ = 8510208.

The previous prime is 25716029. The next prime is 25716071. The reversal of 25716040 is 4061752.

It is a super-2 number, since 2×25716040² = 1322629426563200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25715996 and 25716014.

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, 6537 + ... + 9703.

It is an arithmetic number, because the mean of its divisors is an integer number (1069200).

Almost surely, 2^25716040 is an apocalyptic number.

25716040 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 25716040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34214400).

25716040 is an abundant number, since it is smaller than the sum of its proper divisors (42712760).

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

25716040 is a wasteful number, since it uses less digits than its factorization.

25716040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214 (or 3210 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 25716040 is about 5071.0985003252. The cubic root of 25716040 is about 295.1671560564.

Adding to 25716040 its reverse (4061752), we get a palindrome (29777792).

The spelling of 25716040 in words is "twenty-five million, seven hundred sixteen thousand, forty".