20425319 has 2 divisors, whose sum is σ = 20425320. Its totient is φ = 20425318.

The previous prime is 20425303. The next prime is 20425333. The reversal of 20425319 is 91352402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20425319 - 2⁴ = 20425303 is a prime.

It is a super-2 number, since 2×20425319² = 834387312503522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20425519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212659 + 10212660.

It is an arithmetic number, because the mean of its divisors is an integer number (10212660).

Almost surely, 2^20425319 is an apocalyptic number.

20425319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425319 is an equidigital number, since it uses as much as digits as its factorization.

20425319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20425319 is about 4519.4379075279. The cubic root of 20425319 is about 273.3524365325.

The spelling of 20425319 in words is "twenty million, four hundred twenty-five thousand, three hundred nineteen".