1166951225 has 54 divisors (see below), whose sum is σ = 1646289162. Its totient is φ = 819456000.

The previous prime is 1166951221. The next prime is 1166951231. The reversal of 1166951225 is 5221596611.

It can be written as a sum of positive squares in 9 ways, for example, as 679071481 + 487879744 = 26059^2 + 22088^2 .

It is not a de Polignac number, because 1166951225 - 2² = 1166951221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166951221) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 12030377 + ... + 12030473.

Almost surely, 2^1166951225 is an apocalyptic number.

It is an amenable number.

1166951225 is a deficient number, since it is larger than the sum of its proper divisors (479337937).

1166951225 is an equidigital number, since it uses as much as digits as its factorization.

1166951225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 154 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 1166951225 is about 34160.6678067042. The cubic root of 1166951225 is about 1052.8121818308.

The spelling of 1166951225 in words is "one billion, one hundred sixty-six million, nine hundred fifty-one thousand, two hundred twenty-five".