25602490368 has 680 divisors, whose sum is σ = 95918806368. Its totient is φ = 6624903168.

The previous prime is 25602490357. The next prime is 25602490369. The reversal of 25602490368 is 86309420652.

25602490368 is a `hidden beast` number, since 2 + 5 + 602 + 4 + 9 + 0 + 36 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25602490369) 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 39 ways as a sum of consecutive naturals, for example, 483065830 + ... + 483065882.

Almost surely, 2^25602490368 is an apocalyptic number.

25602490368 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 25602490368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47959403184).

25602490368 is an abundant number, since it is smaller than the sum of its proper divisors (70316316000).

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

25602490368 is an frugal number, since it uses more digits than its factorization.

25602490368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 25602490368 in words is "twenty-five billion, six hundred two million, four hundred ninety thousand, three hundred sixty-eight".