22500019 has 2 divisors, whose sum is σ = 22500020. Its totient is φ = 22500018.

The previous prime is 22500011. The next prime is 22500029. The reversal of 22500019 is 91000522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22500019 - 2³ = 22500011 is a prime.

It is a super-2 number, since 2×22500019² = 1012501710000722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22499969 and 22500005.

It is not a weakly prime, because it can be changed into another prime (22500011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11250009 + 11250010.

It is an arithmetic number, because the mean of its divisors is an integer number (11250010).

Almost surely, 2^22500019 is an apocalyptic number.

22500019 is a deficient number, since it is larger than the sum of its proper divisors (1).

22500019 is an equidigital number, since it uses as much as digits as its factorization.

22500019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 22500019 is about 4743.4184930280. The cubic root of 22500019 is about 282.3108881296.

The spelling of 22500019 in words is "twenty-two million, five hundred thousand, nineteen".