109243118025 has 36 divisors (see below), whose sum is σ = 195700747788. Its totient is φ = 58252817280.

The previous prime is 109243117993. The next prime is 109243118051. The reversal of 109243118025 is 520811342901.

It can be written as a sum of positive squares in 6 ways, for example, as 5638958649 + 103604159376 = 75093^2 + 321876^2 .

It is not a de Polignac number, because 109243118025 - 2⁵ = 109243117993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1349599 + ... + 1428251.

It is an arithmetic number, because the mean of its divisors is an integer number (5436131883).

Almost surely, 2^109243118025 is an apocalyptic number.

109243118025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109243118025 is a deficient number, since it is larger than the sum of its proper divisors (86457629763).

109243118025 is a wasteful number, since it uses less digits than its factorization.

109243118025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84842 (or 84834 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 109243118025 in words is "one hundred nine billion, two hundred forty-three million, one hundred eighteen thousand, twenty-five".