25613441764 has 9 divisors (see below), whose sum is σ = 44824083241. Its totient is φ = 12806560840.

The previous prime is 25613441753. The next prime is 25613441783. The reversal of 25613441764 is 46714431652.

The square root of 25613441764 is 160042.

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., 535552164 + 25077889600 = 23142^2 + 158360^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25613441764.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 280074 + ... + 360094.

Almost surely, 2^25613441764 is an apocalyptic number.

25613441764 is the 160042-nd square number.

It is an amenable number.

25613441764 is a deficient number, since it is larger than the sum of its proper divisors (19210641477).

25613441764 is an frugal number, since it uses more digits than its factorization.

25613441764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160046 (or 80023 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The spelling of 25613441764 in words is "twenty-five billion, six hundred thirteen million, four hundred forty-one thousand, seven hundred sixty-four".