25530967812 has 384 divisors, whose sum is σ = 79252992000. Its totient is φ = 6221905920.

The previous prime is 25530967789. The next prime is 25530967841. The reversal of 25530967812 is 21876903552.

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 127 ways as a sum of consecutive naturals, for example, 65632114 + ... + 65632502.

It is an arithmetic number, because the mean of its divisors is an integer number (206388000).

Almost surely, 2^25530967812 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 25530967812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39626496000).

25530967812 is an abundant number, since it is smaller than the sum of its proper divisors (53722024188).

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

25530967812 is a wasteful number, since it uses less digits than its factorization.

25530967812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 25530967812 in words is "twenty-five billion, five hundred thirty million, nine hundred sixty-seven thousand, eight hundred twelve".