25343504440 has 16 divisors (see below), whose sum is σ = 57022885080. Its totient is φ = 10137401760.

The previous prime is 25343504413. The next prime is 25343504449. The reversal of 25343504440 is 4440534352.

It is a junction number, because it is equal to n+sod(n) for n = 25343504396 and 25343504405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25343504449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 316793766 + ... + 316793845.

Almost surely, 2^25343504440 is an apocalyptic number.

25343504440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25343504440 is an abundant number, since it is smaller than the sum of its proper divisors (31679380640).

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

25343504440 is a wasteful number, since it uses less digits than its factorization.

25343504440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633587622 (or 633587618 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 34.

The spelling of 25343504440 in words is "twenty-five billion, three hundred forty-three million, five hundred four thousand, four hundred forty".