25320496128 has 132 divisors (see below), whose sum is σ = 70554735048. Its totient is φ = 8072683520.

The previous prime is 25320496127. The next prime is 25320496139. The reversal of 25320496128 is 82169402352.

It is a super-2 number, since 2×25320496128² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25320496128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25320496127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1617298 + ... + 1632878.

Almost surely, 2^25320496128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25320496128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35277367524).

25320496128 is an abundant number, since it is smaller than the sum of its proper divisors (45234238920).

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

25320496128 is a wasteful number, since it uses less digits than its factorization.

25320496128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15650 (or 15609 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 25320496128 in words is "twenty-five billion, three hundred twenty million, four hundred ninety-six thousand, one hundred twenty-eight".