1187000225 has 24 divisors (see below), whose sum is σ = 1512095928. Its totient is φ = 923788800.

The previous prime is 1187000183. The next prime is 1187000237. The reversal of 1187000225 is 5220007811.

It can be written as a sum of positive squares in 12 ways, for example, as 143904016 + 1043096209 = 11996^2 + 32297^2 .

It is not a de Polignac number, because 1187000225 - 2⁶ = 1187000161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1187000194 and 1187000203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405467 + ... + 408383.

It is an arithmetic number, because the mean of its divisors is an integer number (63003997).

Almost surely, 2^1187000225 is an apocalyptic number.

It is an amenable number.

1187000225 is a deficient number, since it is larger than the sum of its proper divisors (325095703).

1187000225 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1187000224) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (3365).

1187000225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 1187000225 is about 34452.8696192349. The cubic root of 1187000225 is about 1058.8073167104.

The spelling of 1187000225 in words is "one billion, one hundred eighty-seven million, two hundred twenty-five", and thus it is an aban number.