25355447040 has 576 divisors, whose sum is σ = 104477506560. Its totient is φ = 5085265920.

The previous prime is 25355447027. The next prime is 25355447077. The reversal of 25355447040 is 4074455352.

It is a self number, because there is not a number n which added to its sum of digits gives 25355447040.

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 63 ways as a sum of consecutive naturals, for example, 8573242 + ... + 8576198.

It is an arithmetic number, because the mean of its divisors is an integer number (181384560).

Almost surely, 2^25355447040 is an apocalyptic number.

25355447040 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 25355447040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52238753280).

25355447040 is an abundant number, since it is smaller than the sum of its proper divisors (79122059520).

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

25355447040 is a wasteful number, since it uses less digits than its factorization.

25355447040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028 (or 3014 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 39.

The spelling of 25355447040 in words is "twenty-five billion, three hundred fifty-five million, four hundred forty-seven thousand, forty".