20255423 has 2 divisors, whose sum is σ = 20255424. Its totient is φ = 20255422.

The previous prime is 20255413. The next prime is 20255429. The reversal of 20255423 is 32455202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20255423 - 2¹⁴ = 20239039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20255429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127711 + 10127712.

It is an arithmetic number, because the mean of its divisors is an integer number (10127712).

Almost surely, 2^20255423 is an apocalyptic number.

20255423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20255423 is an equidigital number, since it uses as much as digits as its factorization.

20255423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20255423 is about 4500.6025152195. The cubic root of 20255423 is about 272.5924182222.

The spelling of 20255423 in words is "twenty million, two hundred fifty-five thousand, four hundred twenty-three".