25723219 has 2 divisors, whose sum is σ = 25723220. Its totient is φ = 25723218.

The previous prime is 25723213. The next prime is 25723253. The reversal of 25723219 is 91232752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25723219 is a prime.

It is a super-2 number, since 2×25723219² = 1323367991443922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25723213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12861609 + 12861610.

It is an arithmetic number, because the mean of its divisors is an integer number (12861610).

Almost surely, 2^25723219 is an apocalyptic number.

25723219 is a deficient number, since it is larger than the sum of its proper divisors (1).

25723219 is an equidigital number, since it uses as much as digits as its factorization.

25723219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 25723219 is about 5071.8062857329. The cubic root of 25723219 is about 295.1946202105.

The spelling of 25723219 in words is "twenty-five million, seven hundred twenty-three thousand, two hundred nineteen".