25314540 has 48 divisors (see below), whose sum is σ = 72092160. Its totient is φ = 6635200.

The previous prime is 25314533. The next prime is 25314557. The reversal of 25314540 is 4541352.

It is a self number, because there is not a number n which added to its sum of digits gives 25314540.

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, 36 + ... + 7115.

It is an arithmetic number, because the mean of its divisors is an integer number (1501920).

Almost surely, 2^25314540 is an apocalyptic number.

25314540 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 25314540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36046080).

25314540 is an abundant number, since it is smaller than the sum of its proper divisors (46777620).

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

25314540 is a wasteful number, since it uses less digits than its factorization.

25314540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222 (or 7220 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 25314540 is about 5031.3556821199. The cubic root of 25314540 is about 293.6229606091.

Adding to 25314540 its reverse (4541352), we get a palindrome (29855892).

The spelling of 25314540 in words is "twenty-five million, three hundred fourteen thousand, five hundred forty".