1425239619556 has 9 divisors (see below), whose sum is σ = 2494173512649. Its totient is φ = 712618615944.

The previous prime is 1425239619473. The next prime is 1425239619571. The reversal of 1425239619556 is 6559169325241.

The square root of 1425239619556 is 1193834.

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., 1065498772900 + 359740846656 = 1032230^2 + 599784^2 .

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 1425239619556.

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, 2089210 + ... + 2686126.

Almost surely, 2^{1425239619556} is an apocalyptic number.

1425239619556 is the 1193834-th square number.

It is an amenable number.

1425239619556 is a deficient number, since it is larger than the sum of its proper divisors (1068933893093).

1425239619556 is an frugal number, since it uses more digits than its factorization.

1425239619556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193838 (or 596919 counting only the distinct ones).

The product of its digits is 17496000, while the sum is 58.

The spelling of 1425239619556 in words is "one trillion, four hundred twenty-five billion, two hundred thirty-nine million, six hundred nineteen thousand, five hundred fifty-six".