1161330225 has 48 divisors (see below), whose sum is σ = 2098151424. Its totient is φ = 562120000.

The previous prime is 1161330193. The next prime is 1161330239. The reversal of 1161330225 is 5220331611.

It is not a de Polignac number, because 1161330225 - 2⁵ = 1161330193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1161330195 and 1161330204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 948964 + ... + 950186.

It is an arithmetic number, because the mean of its divisors is an integer number (43711488).

Almost surely, 2^1161330225 is an apocalyptic number.

1161330225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161330225 is a deficient number, since it is larger than the sum of its proper divisors (936821199).

1161330225 is a wasteful number, since it uses less digits than its factorization.

1161330225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 2393 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1161330225 is about 34078.2955119531. The cubic root of 1161330225 is about 1051.1190563550.

Adding to 1161330225 its reverse (5220331611), we get a palindrome (6381661836).

The spelling of 1161330225 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, two hundred twenty-five".