25128181260 has 480 divisors, whose sum is σ = 101251003392. Its totient is φ = 5070574080.

The previous prime is 25128181249. The next prime is 25128181277. The reversal of 25128181260 is 6218182152.

25128181260 is a `hidden beast` number, since 2 + 512 + 8 + 1 + 81 + 2 + 60 = 666.

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

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 159 ways as a sum of consecutive naturals, for example, 3386955 + ... + 3394365.

Almost surely, 2^25128181260 is an apocalyptic number.

25128181260 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 25128181260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50625501696).

25128181260 is an abundant number, since it is smaller than the sum of its proper divisors (76122822132).

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

25128181260 is a wasteful number, since it uses less digits than its factorization.

25128181260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7475 (or 7464 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 25128181260 in words is "twenty-five billion, one hundred twenty-eight million, one hundred eighty-one thousand, two hundred sixty".