25919712016 has 45 divisors (see below), whose sum is σ = 55214972743. Its totient is φ = 11778467360.

The previous prime is 25919711981. The next prime is 25919712019. The reversal of 25919712016 is 61021791952.

The square root of 25919712016 is 160996.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25919712019) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7081995 + ... + 7085653.

Almost surely, 2^25919712016 is an apocalyptic number.

25919712016 is the 160996-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25919712016

25919712016 is an abundant number, since it is smaller than the sum of its proper divisors (29295260727).

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

25919712016 is an frugal number, since it uses more digits than its factorization.

25919712016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348 (or 3672 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 43.

The spelling of 25919712016 in words is "twenty-five billion, nine hundred nineteen million, seven hundred twelve thousand, sixteen".