22505723 has 2 divisors, whose sum is σ = 22505724. Its totient is φ = 22505722.

The previous prime is 22505689. The next prime is 22505741. The reversal of 22505723 is 32750522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22505723 - 2¹⁴ = 22489339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22505692 and 22505701.

It is not a weakly prime, because it can be changed into another prime (22505423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11252861 + 11252862.

It is an arithmetic number, because the mean of its divisors is an integer number (11252862).

Almost surely, 2^22505723 is an apocalyptic number.

22505723 is a deficient number, since it is larger than the sum of its proper divisors (1).

22505723 is an equidigital number, since it uses as much as digits as its factorization.

22505723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 22505723 is about 4744.0197090653. The cubic root of 22505723 is about 282.3347424094.

The spelling of 22505723 in words is "twenty-two million, five hundred five thousand, seven hundred twenty-three".