25853140 has 12 divisors (see below), whose sum is σ = 54291636. Its totient is φ = 10341248.

The previous prime is 25853137. The next prime is 25853143. The reversal of 25853140 is 4135852.

It is an interprime number because it is at equal distance from previous prime (25853137) and next prime (25853143).

It can be written as a sum of positive squares in 2 ways, for example, as 8928144 + 16924996 = 2988^2 + 4114^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25853099 and 25853108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25853143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646309 + ... + 646348.

It is an arithmetic number, because the mean of its divisors is an integer number (4524303).

Almost surely, 2^25853140 is an apocalyptic number.

25853140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25853140 is an abundant number, since it is smaller than the sum of its proper divisors (28438496).

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

25853140 is a wasteful number, since it uses less digits than its factorization.

25853140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292666 (or 1292664 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 25853140 is about 5084.5983125513. The cubic root of 25853140 is about 295.6907684873.

Adding to 25853140 its reverse (4135852), we get a palindrome (29988992).

The spelling of 25853140 in words is "twenty-five million, eight hundred fifty-three thousand, one hundred forty".