11905018633225 has 9 divisors (see below), whose sum is σ = 14762244497493. Its totient is φ = 9524001105120.

The previous prime is 11905018633171. The next prime is 11905018633237. The reversal of 11905018633225 is 52233681050911.

The square root of 11905018633225 is 3450365.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2558326673529 + 9346691959696 = 1599477^2 + 3057236^2 .

It is not a de Polignac number, because 11905018633225 - 2³⁹ = 11355262819337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16906789 + ... + 17596861.

Almost surely, 2^{11905018633225} is an apocalyptic number.

11905018633225 is the 3450365-th square number.

11905018633225 is the 1725183-rd centered octagonal number.

It is an amenable number.

11905018633225 is a deficient number, since it is larger than the sum of its proper divisors (2857225864268).

11905018633225 is an frugal number, since it uses more digits than its factorization.

11905018633225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380156 (or 690078 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 11905018633225 in words is "eleven trillion, nine hundred five billion, eighteen million, six hundred thirty-three thousand, two hundred twenty-five".