1889044080625 has 45 divisors (see below), whose sum is σ = 2556702525333. Its totient is φ = 1394656536000.

The previous prime is 1889044080611. The next prime is 1889044080631. The reversal of 1889044080625 is 5260804409881.

The square root of 1889044080625 is 1374425.

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

It can be written as a sum of positive squares in 22 ways, for example, as 1884423344049 + 4620736576 = 1372743^2 + 67976^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1889044080625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 446686011 + ... + 446690239.

Almost surely, 2^{1889044080625} is an apocalyptic number.

1889044080625 is the 1374425-th square number.

1889044080625 is the 687213-rd centered octagonal number.

It is an amenable number.

1889044080625 is a deficient number, since it is larger than the sum of its proper divisors (667658444708).

1889044080625 is an frugal number, since it uses more digits than its factorization.

1889044080625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8504 (or 4247 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 1889044080625 in words is "one trillion, eight hundred eighty-nine billion, forty-four million, eighty thousand, six hundred twenty-five".