1109023925 has 12 divisors (see below), whose sum is σ = 1377029796. Its totient is φ = 886032000.

The previous prime is 1109023921. The next prime is 1109023943. The reversal of 1109023925 is 5293209011.

It can be written as a sum of positive squares in 6 ways, for example, as 15928081 + 1093095844 = 3991^2 + 33062^2 .

It is not a de Polignac number, because 1109023925 - 2² = 1109023921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1109023891 and 1109023900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109023921) 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, 10376 + ... + 48225.

It is an arithmetic number, because the mean of its divisors is an integer number (114752483).

Almost surely, 2^1109023925 is an apocalyptic number.

It is an amenable number.

1109023925 is a deficient number, since it is larger than the sum of its proper divisors (268005871).

1109023925 is an equidigital number, since it uses as much as digits as its factorization.

1109023925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59368 (or 59363 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 1109023925 is about 33302.0108251739. The cubic root of 1109023925 is about 1035.0952248885.

The spelling of 1109023925 in words is "one billion, one hundred nine million, twenty-three thousand, nine hundred twenty-five".