25536351720 has 128 divisors (see below), whose sum is σ = 83634042240. Its totient is φ = 6186147840.

The previous prime is 25536351713. The next prime is 25536351791. The reversal of 25536351720 is 2715363552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2043732 + ... + 2056188.

It is an arithmetic number, because the mean of its divisors is an integer number (653390955).

Almost surely, 2^25536351720 is an apocalyptic number.

25536351720 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 25536351720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41817021120).

25536351720 is an abundant number, since it is smaller than the sum of its proper divisors (58097690520).

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

25536351720 is a wasteful number, since it uses less digits than its factorization.

25536351720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14035 (or 14031 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 39.

The spelling of 25536351720 in words is "twenty-five billion, five hundred thirty-six million, three hundred fifty-one thousand, seven hundred twenty".