109125881 has 2 divisors, whose sum is σ = 109125882. Its totient is φ = 109125880.

The previous prime is 109125871. The next prime is 109125899. The reversal of 109125881 is 188521901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106419856 + 2706025 = 10316^2 + 1645^2 .

It is a cyclic number.

It is not a de Polignac number, because 109125881 - 2⁶ = 109125817 is a prime.

It is a super-2 number, since 2×109125881² = 23816915808052322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109125871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54562940 + 54562941.

It is an arithmetic number, because the mean of its divisors is an integer number (54562941).

Almost surely, 2^109125881 is an apocalyptic number.

It is an amenable number.

109125881 is a deficient number, since it is larger than the sum of its proper divisors (1).

109125881 is an equidigital number, since it uses as much as digits as its factorization.

109125881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 109125881 is about 10446.3333758788. Note that the first 4 decimals coincide. The cubic root of 109125881 is about 477.8694358713.

The spelling of 109125881 in words is "one hundred nine million, one hundred twenty-five thousand, eight hundred eighty-one".