25352242540 has 96 divisors (see below), whose sum is σ = 55547856000. Its totient is φ = 9707722752.

The previous prime is 25352242523. The next prime is 25352242567. The reversal of 25352242540 is 4524225352.

It is a junction number, because it is equal to n+sod(n) for n = 25352242496 and 25352242505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65172666 + ... + 65173054.

It is an arithmetic number, because the mean of its divisors is an integer number (578623500).

Almost surely, 2^25352242540 is an apocalyptic number.

25352242540 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 25352242540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27773928000).

25352242540 is an abundant number, since it is smaller than the sum of its proper divisors (30195613460).

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

25352242540 is a wasteful number, since it uses less digits than its factorization.

25352242540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 34.

Adding to 25352242540 its reverse (4524225352), we get a palindrome (29876467892).

The spelling of 25352242540 in words is "twenty-five billion, three hundred fifty-two million, two hundred forty-two thousand, five hundred forty".