1899563716225 has 24 divisors (see below), whose sum is σ = 2701533126528. Its totient is φ = 1297922505600.

The previous prime is 1899563716217. The next prime is 1899563716273. The reversal of 1899563716225 is 5226173659981.

It is not a de Polignac number, because 1899563716225 - 2³ = 1899563716217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19265149 + ... + 19363498.

It is an arithmetic number, because the mean of its divisors is an integer number (112563880272).

Almost surely, 2^{1899563716225} is an apocalyptic number.

It is an amenable number.

1899563716225 is a deficient number, since it is larger than the sum of its proper divisors (801969410303).

1899563716225 is a wasteful number, since it uses less digits than its factorization.

1899563716225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38628945 (or 38628940 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 64.

It can be divided in two parts, 189956 and 3716225, that multiplied together give a square (705919236100 = 840190²).

The spelling of 1899563716225 in words is "one trillion, eight hundred ninety-nine billion, five hundred sixty-three million, seven hundred sixteen thousand, two hundred twenty-five".