25443913286416 has 135 divisors (see below), whose sum is σ = 53786359029429. Its totient is φ = 11658145795200.

The previous prime is 25443913286411. The next prime is 25443913286423. The reversal of 25443913286416 is 61468231934452.

The square root of 25443913286416 is 5044196.

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

It can be written as a sum of positive squares in only one way, i.e., 24269377548816 + 1174535737600 = 4926396^2 + 1083760^2 .

It is not an unprimeable number, because it can be changed into a prime (25443913286411) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11884124706 + ... + 11884126846.

Almost surely, 2^{25443913286416} is an apocalyptic number.

25443913286416 is the 5044196-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25443913286416

25443913286416 is an abundant number, since it is smaller than the sum of its proper divisors (28342445743013).

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

25443913286416 is an frugal number, since it uses more digits than its factorization.

25443913286416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390 (or 2193 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 58.

The spelling of 25443913286416 in words is "twenty-five trillion, four hundred forty-three billion, nine hundred thirteen million, two hundred eighty-six thousand, four hundred sixteen".