25705219 has 2 divisors, whose sum is σ = 25705220. Its totient is φ = 25705218.

The previous prime is 25705189. The next prime is 25705249. The reversal of 25705219 is 91250752.

It is a balanced prime because it is at equal distance from previous prime (25705189) and next prime (25705249).

It is a cyclic number.

It is not a de Polignac number, because 25705219 - 2⁵ = 25705187 is a prime.

It is a super-2 number, since 2×25705219² = 1321516567675922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25705249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12852609 + 12852610.

It is an arithmetic number, because the mean of its divisors is an integer number (12852610).

Almost surely, 2^25705219 is an apocalyptic number.

25705219 is a deficient number, since it is larger than the sum of its proper divisors (1).

25705219 is an equidigital number, since it uses as much as digits as its factorization.

25705219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25705219 is about 5070.0314594685. The cubic root of 25705219 is about 295.1257493196.

The spelling of 25705219 in words is "twenty-five million, seven hundred five thousand, two hundred nineteen".