25831998712 has 64 divisors (see below), whose sum is σ = 55765644480. Its totient is φ = 11112118272.

The previous prime is 25831998697. The next prime is 25831998713. The reversal of 25831998712 is 21789913852.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25831998713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111178 + ... + 253030.

It is an arithmetic number, because the mean of its divisors is an integer number (871338195).

Almost surely, 2^25831998712 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 25831998712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27882822240).

25831998712 is an abundant number, since it is smaller than the sum of its proper divisors (29933645768).

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

25831998712 is a wasteful number, since it uses less digits than its factorization.

25831998712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141992 (or 141988 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The spelling of 25831998712 in words is "twenty-five billion, eight hundred thirty-one million, nine hundred ninety-eight thousand, seven hundred twelve".