25921000672 has 96 divisors (see below), whose sum is σ = 60575606784. Its totient is φ = 10684224000.

The previous prime is 25921000663. The next prime is 25921000709. The reversal of 25921000672 is 27600012952.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120422 + ... + 1143322.

It is an arithmetic number, because the mean of its divisors is an integer number (630995904).

Almost surely, 2^25921000672 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 25921000672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30287803392).

25921000672 is an abundant number, since it is smaller than the sum of its proper divisors (34654606112).

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

25921000672 is a wasteful number, since it uses less digits than its factorization.

25921000672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23112 (or 23104 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 25921000672 in words is "twenty-five billion, nine hundred twenty-one million, six hundred seventy-two", and thus it is an aban number.