25035809568 has 192 divisors, whose sum is σ = 82237897728. Its totient is φ = 6478801920.

The previous prime is 25035809563. The next prime is 25035809599. The reversal of 25035809568 is 86590853052.

It is a self number, because there is not a number n which added to its sum of digits gives 25035809568.

It is not an unprimeable number, because it can be changed into a prime (25035809563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2041471 + ... + 2053697.

It is an arithmetic number, because the mean of its divisors is an integer number (428322384).

Almost surely, 2^25035809568 is an apocalyptic number.

25035809568 is a gapful number since it is divisible by the number (28) 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 25035809568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41118948864).

25035809568 is an abundant number, since it is smaller than the sum of its proper divisors (57202088160).

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

25035809568 is a wasteful number, since it uses less digits than its factorization.

25035809568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12535 (or 12527 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 25035809568 in words is "twenty-five billion, thirty-five million, eight hundred nine thousand, five hundred sixty-eight".