25331646054 has 64 divisors (see below), whose sum is σ = 59601282048. Its totient is φ = 7076160000.

The previous prime is 25331646049. The next prime is 25331646079. The reversal of 25331646054 is 45064613352.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 624702 + ... + 664014.

It is an arithmetic number, because the mean of its divisors is an integer number (931270032).

Almost surely, 2^25331646054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25331646054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29800641024).

25331646054 is an abundant number, since it is smaller than the sum of its proper divisors (34269635994).

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

25331646054 is a wasteful number, since it uses less digits than its factorization.

25331646054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40093.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 25331646054 in words is "twenty-five billion, three hundred thirty-one million, six hundred forty-six thousand, fifty-four".