1109902125 has 16 divisors (see below), whose sum is σ = 1846877760. Its totient is φ = 591947600.

The previous prime is 1109902121. The next prime is 1109902127. The reversal of 1109902125 is 5212099011.

It is not a de Polignac number, because 1109902125 - 2² = 1109902121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1109902092 and 1109902101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109902121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479495 + ... + 1480244.

It is an arithmetic number, because the mean of its divisors is an integer number (115429860).

Almost surely, 2^1109902125 is an apocalyptic number.

1109902125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1109902125 is a deficient number, since it is larger than the sum of its proper divisors (736975635).

1109902125 is an equidigital number, since it uses as much as digits as its factorization.

1109902125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959757 (or 2959747 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 1109902125 is about 33315.1936059210. The cubic root of 1109902125 is about 1035.3683722241.

The spelling of 1109902125 in words is "one billion, one hundred nine million, nine hundred two thousand, one hundred twenty-five".