109625921 has 2 divisors, whose sum is σ = 109625922. Its totient is φ = 109625920.

The previous prime is 109625897. The next prime is 109625939. The reversal of 109625921 is 129526901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97792321 + 11833600 = 9889^2 + 3440^2 .

It is a cyclic number.

It is not a de Polignac number, because 109625921 - 2¹⁸ = 109363777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (109625941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54812960 + 54812961.

It is an arithmetic number, because the mean of its divisors is an integer number (54812961).

Almost surely, 2^109625921 is an apocalyptic number.

It is an amenable number.

109625921 is a deficient number, since it is larger than the sum of its proper divisors (1).

109625921 is an equidigital number, since it uses as much as digits as its factorization.

109625921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 109625921 is about 10470.2397775791. The cubic root of 109625921 is about 478.5982265616.

The spelling of 109625921 in words is "one hundred nine million, six hundred twenty-five thousand, nine hundred twenty-one".