425277449689 has 9 divisors (see below), whose sum is σ = 426339811317. Its totient is φ = 424217733564.

The previous prime is 425277449687. The next prime is 425277449693. The reversal of 425277449689 is 986944772524.

The square root of 425277449689 is 652133.

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

It is not a de Polignac number, because 425277449689 - 2¹ = 425277449687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425277449683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 468883174 + ... + 468884080.

Almost surely, 2^425277449689 is an apocalyptic number.

425277449689 is the 652133-rd square number.

425277449689 is the 326067-th centered octagonal number.

It is an amenable number.

425277449689 is a deficient number, since it is larger than the sum of its proper divisors (1062361628).

425277449689 is an frugal number, since it uses more digits than its factorization.

425277449689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252 (or 1626 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 67.

The spelling of 425277449689 in words is "four hundred twenty-five billion, two hundred seventy-seven million, four hundred forty-nine thousand, six hundred eighty-nine".