25330163580 has 144 divisors (see below), whose sum is σ = 80292086784. Its totient is φ = 6451632000.

The previous prime is 25330163561. The next prime is 25330163609. The reversal of 25330163580 is 8536103352.

25330163580 is a `hidden beast` number, since 2 + 533 + 0 + 16 + 35 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3105067 + ... + 3113213.

It is an arithmetic number, because the mean of its divisors is an integer number (557583936).

Almost surely, 2^25330163580 is an apocalyptic number.

25330163580 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 25330163580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40146043392).

25330163580 is an abundant number, since it is smaller than the sum of its proper divisors (54961923204).

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

25330163580 is a wasteful number, since it uses less digits than its factorization.

25330163580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8936 (or 8931 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 25330163580 in words is "twenty-five billion, three hundred thirty million, one hundred sixty-three thousand, five hundred eighty".