1171874435225 has 24 divisors (see below), whose sum is σ = 1566927882072. Its totient is φ = 864264499200.

The previous prime is 1171874435197. The next prime is 1171874435261. The reversal of 1171874435225 is 5225344781711.

It can be written as a sum of positive squares in 12 ways, for example, as 823717792921 + 348156642304 = 907589^2 + 590048^2 .

It is not a de Polignac number, because 1171874435225 - 2¹⁶ = 1171874369689 is a prime.

It is a Duffinian number.

It is a Curzon 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, 2081096 + ... + 2583545.

It is an arithmetic number, because the mean of its divisors is an integer number (65288661753).

Almost surely, 2^{1171874435225} is an apocalyptic number.

It is an amenable number.

1171874435225 is a deficient number, since it is larger than the sum of its proper divisors (395053446847).

1171874435225 is a wasteful number, since it uses less digits than its factorization.

1171874435225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665437 (or 4665432 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 50.

The spelling of 1171874435225 in words is "one trillion, one hundred seventy-one billion, eight hundred seventy-four million, four hundred thirty-five thousand, two hundred twenty-five".