655256251441 has 9 divisors (see below), whose sum is σ = 720250129963. Its totient is φ = 595679406520.

The previous prime is 655256251411. The next prime is 655256251459. The reversal of 655256251441 is 144152652556.

The square root of 655256251441 is 809479.

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., 540917591841 + 114338659600 = 735471^2 + 338140^2 .

It is not a de Polignac number, because 655256251441 - 2¹¹ = 655256249393 is a prime.

It is a super-2 number, since 2×655256251441² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655256251391 and 655256251400.

It is not an unprimeable number, because it can be changed into a prime (655256251411) 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, 8867475 + ... + 8941063.

Almost surely, 2^655256251441 is an apocalyptic number.

655256251441 is the 809479-th square number.

655256251441 is the 404740-th centered octagonal number.

It is an amenable number.

655256251441 is a deficient number, since it is larger than the sum of its proper divisors (64993878522).

655256251441 is an frugal number, since it uses more digits than its factorization.

655256251441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147200 (or 73600 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 46.

The spelling of 655256251441 in words is "six hundred fifty-five billion, two hundred fifty-six million, two hundred fifty-one thousand, four hundred forty-one".