22525109 has 2 divisors, whose sum is σ = 22525110. Its totient is φ = 22525108.

The previous prime is 22525103. The next prime is 22525117. The reversal of 22525109 is 90152522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 2900209 = 4430^2 + 1703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22525109 is a prime.

It is a Chen prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22525103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11262554 + 11262555.

It is an arithmetic number, because the mean of its divisors is an integer number (11262555).

Almost surely, 2^22525109 is an apocalyptic number.

It is an amenable number.

22525109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22525109 is an equidigital number, since it uses as much as digits as its factorization.

22525109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 22525109 is about 4746.0624732509. The cubic root of 22525109 is about 282.4157850628.

The spelling of 22525109 in words is "twenty-two million, five hundred twenty-five thousand, one hundred nine".