109925861 has 2 divisors, whose sum is σ = 109925862. Its totient is φ = 109925860.

The previous prime is 109925857. The next prime is 109925873. The reversal of 109925861 is 168529901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108035236 + 1890625 = 10394^2 + 1375^2 .

It is a cyclic number.

It is not a de Polignac number, because 109925861 - 2² = 109925857 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109925831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54962930 + 54962931.

It is an arithmetic number, because the mean of its divisors is an integer number (54962931).

Almost surely, 2^109925861 is an apocalyptic number.

It is an amenable number.

109925861 is a deficient number, since it is larger than the sum of its proper divisors (1).

109925861 is an equidigital number, since it uses as much as digits as its factorization.

109925861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 109925861 is about 10484.5534478107. The cubic root of 109925861 is about 479.0343157323.

The spelling of 109925861 in words is "one hundred nine million, nine hundred twenty-five thousand, eight hundred sixty-one".