25691484000000 has 1512 divisors, whose sum is σ = 107104069362864. Its totient is φ = 5419008000000.

The previous prime is 25691483999989. The next prime is 25691484000001. The reversal of 25691484000000 is 48419652.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25691484000001) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 7643998320 + ... + 7644001680.

Almost surely, 2^{25691484000000} is an apocalyptic number.

25691484000000 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 25691484000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53552034681432).

25691484000000 is an abundant number, since it is smaller than the sum of its proper divisors (81412585362864).

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

25691484000000 is an frugal number, since it uses more digits than its factorization.

25691484000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 25691484000000 in words is "twenty-five trillion, six hundred ninety-one billion, four hundred eighty-four million", and thus it is an aban number.