65425454656 has 21 divisors (see below), whose sum is σ = 129832697281. Its totient is φ = 32711704192.

The previous prime is 65425454593. The next prime is 65425454663. The reversal of 65425454656 is 65645452456.

The square root of 65425454656 is 255784.

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

65425454656 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., 63081345600 + 2344109056 = 251160^2 + 48416^2 .

It is a Duffinian number.

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, 2030286 + ... + 2062258.

Almost surely, 2^65425454656 is an apocalyptic number.

65425454656 is the 255784-th square number.

It is an amenable number.

65425454656 is a deficient number, since it is larger than the sum of its proper divisors (64407242625).

65425454656 is an frugal number, since it uses more digits than its factorization.

65425454656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63958 (or 31975 counting only the distinct ones).

The product of its digits is 17280000, while the sum is 52.

The spelling of 65425454656 in words is "sixty-five billion, four hundred twenty-five million, four hundred fifty-four thousand, six hundred fifty-six".