1166510225 has 12 divisors (see below), whose sum is σ = 1522603440. Its totient is φ = 884091600.

The previous prime is 1166510221. The next prime is 1166510269. The reversal of 1166510225 is 5220156611.

It is a happy number.

It is not a de Polignac number, because 1166510225 - 2² = 1166510221 is a prime.

It is a super-2 number, since 2×1166510225² = 2721492210059101250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166510221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1227431 + ... + 1228380.

It is an arithmetic number, because the mean of its divisors is an integer number (126883620).

Almost surely, 2^1166510225 is an apocalyptic number.

It is an amenable number.

1166510225 is a deficient number, since it is larger than the sum of its proper divisors (356093215).

1166510225 is a wasteful number, since it uses less digits than its factorization.

1166510225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455840 (or 2455835 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1166510225 is about 34154.2124049143. The cubic root of 1166510225 is about 1052.6795431335.

Adding to 1166510225 its reverse (5220156611), we get a palindrome (6386666836).

The spelling of 1166510225 in words is "one billion, one hundred sixty-six million, five hundred ten thousand, two hundred twenty-five".