968639798025 has 45 divisors (see below), whose sum is σ = 1794337786263. Its totient is φ = 516584271600.

The previous prime is 968639798023. The next prime is 968639798041. The reversal of 968639798025 is 520897936869.

The square root of 968639798025 is 984195.

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

968639798025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 348710327289 + 619929470736 = 590517^2 + 787356^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 968639798025 - 2¹ = 968639798023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (968639798023) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 44277840 + ... + 44299710.

Almost surely, 2^968639798025 is an apocalyptic number.

968639798025 is the 984195-th square number.

968639798025 is the 492098-th centered octagonal number.

It is an amenable number.

968639798025 is a deficient number, since it is larger than the sum of its proper divisors (825697988238).

968639798025 is an frugal number, since it uses more digits than its factorization.

968639798025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43764 (or 21879 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 72.

The spelling of 968639798025 in words is "nine hundred sixty-eight billion, six hundred thirty-nine million, seven hundred ninety-eight thousand, twenty-five".