1091133225 has 216 divisors, whose sum is σ = 2562460992. Its totient is φ = 439084800.

The previous prime is 1091133221. The next prime is 1091133233. The reversal of 1091133225 is 5223311901.

It is not a de Polignac number, because 1091133225 - 2² = 1091133221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1091133221) by changing a digit.

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 215 ways as a sum of consecutive naturals, for example, 3296310 + ... + 3296640.

Almost surely, 2^1091133225 is an apocalyptic number.

1091133225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1091133225 is an abundant number, since it is smaller than the sum of its proper divisors (1471327767).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1091133225 is a wasteful number, since it uses less digits than its factorization.

1091133225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1091133225 is about 33032.3057778291. The cubic root of 1091133225 is about 1029.4989944121.

The spelling of 1091133225 in words is "one billion, ninety-one million, one hundred thirty-three thousand, two hundred twenty-five".