1894848606225 has 81 divisors (see below), whose sum is σ = 3420909704667. Its totient is φ = 1002602020320.

The previous prime is 1894848606193. The next prime is 1894848606239. The reversal of 1894848606225 is 5226068484981.

The square root of 1894848606225 is 1376535.

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

1894848606225 is a `hidden beast` number, since 1 + 8 + 94 + 8 + 486 + 0 + 62 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 682145498241 + 1212703107984 = 825921^2 + 1101228^2 .

It is not a de Polignac number, because 1894848606225 - 2⁵ = 1894848606193 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3365627794 + ... + 3365628356.

Almost surely, 2^{1894848606225} is an apocalyptic number.

1894848606225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1894848606225 is the 1376535-th square number.

1894848606225 is the 688268-th centered octagonal number.

It is an amenable number.

1894848606225 is a deficient number, since it is larger than the sum of its proper divisors (1526061098442).

1894848606225 is an frugal number, since it uses more digits than its factorization.

1894848606225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 63.

The spelling of 1894848606225 in words is "one trillion, eight hundred ninety-four billion, eight hundred forty-eight million, six hundred six thousand, two hundred twenty-five".