25435526413440 has 1024 divisors, whose sum is σ = 98011646853120. Its totient is φ = 5528317132800.

The previous prime is 25435526413439. The next prime is 25435526413459. The reversal of 25435526413440 is 4431462553452.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 25435526413440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2136894529 + ... + 2136906431.

It is an arithmetic number, because the mean of its divisors is an integer number (95714498880).

Almost surely, 2^{25435526413440} is an apocalyptic number.

25435526413440 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 25435526413440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49005823426560).

25435526413440 is an abundant number, since it is smaller than the sum of its proper divisors (72576120439680).

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

25435526413440 is a wasteful number, since it uses less digits than its factorization.

25435526413440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12173 (or 12161 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 48.

Adding to 25435526413440 its reverse (4431462553452), we get a palindrome (29866988966892).

The spelling of 25435526413440 in words is "twenty-five trillion, four hundred thirty-five billion, five hundred twenty-six million, four hundred thirteen thousand, four hundred forty".