1109606925 has 48 divisors (see below), whose sum is σ = 2108392832. Its totient is φ = 504403200.

The previous prime is 1109606891. The next prime is 1109606929. The reversal of 1109606925 is 5296069011.

It is not a de Polignac number, because 1109606925 - 2¹⁵ = 1109574157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109606929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89187 + ... + 100863.

Almost surely, 2^1109606925 is an apocalyptic number.

1109606925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1109606925 is a deficient number, since it is larger than the sum of its proper divisors (998785907).

1109606925 is a wasteful number, since it uses less digits than its factorization.

1109606925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11878 (or 11873 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 1109606925 is about 33310.7629003000. The cubic root of 1109606925 is about 1035.2765719841.

The spelling of 1109606925 in words is "one billion, one hundred nine million, six hundred six thousand, nine hundred twenty-five".