25113187008 has 672 divisors, whose sum is σ = 95112815616. Its totient is φ = 6153117696.

The previous prime is 25113187003. The next prime is 25113187067. The reversal of 25113187008 is 80078131152.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is not an unprimeable number, because it can be changed into a prime (25113187003) 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 95 ways as a sum of consecutive naturals, for example, 44605735 + ... + 44606297.

It is an arithmetic number, because the mean of its divisors is an integer number (141536928).

Almost surely, 2^25113187008 is an apocalyptic number.

25113187008 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 25113187008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47556407808).

25113187008 is an abundant number, since it is smaller than the sum of its proper divisors (69999628608).

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

25113187008 is a wasteful number, since it uses less digits than its factorization.

25113187008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 25113187008 in words is "twenty-five billion, one hundred thirteen million, one hundred eighty-seven thousand, eight".