20425159 has 2 divisors, whose sum is σ = 20425160. Its totient is φ = 20425158.

The previous prime is 20425121. The next prime is 20425169. The reversal of 20425159 is 95152402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20425159 - 2²³ = 12036551 is a prime.

It is a super-3 number, since 3×20425159³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20425169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212579 + 10212580.

It is an arithmetic number, because the mean of its divisors is an integer number (10212580).

Almost surely, 2^20425159 is an apocalyptic number.

20425159 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425159 is an equidigital number, since it uses as much as digits as its factorization.

20425159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 20425159 is about 4519.4202061769. The cubic root of 20425159 is about 273.3517227696.

The spelling of 20425159 in words is "twenty million, four hundred twenty-five thousand, one hundred fifty-nine".