20265629 has 2 divisors, whose sum is σ = 20265630. Its totient is φ = 20265628.

The previous prime is 20265613. The next prime is 20265667. The reversal of 20265629 is 92656202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15225604 + 5040025 = 3902^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 20265629 - 2⁴ = 20265613 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20265595 and 20265604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20265929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10132814 + 10132815.

It is an arithmetic number, because the mean of its divisors is an integer number (10132815).

Almost surely, 2^20265629 is an apocalyptic number.

It is an amenable number.

20265629 is a deficient number, since it is larger than the sum of its proper divisors (1).

20265629 is an equidigital number, since it uses as much as digits as its factorization.

20265629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 20265629 is about 4501.7362206153. The cubic root of 20265629 is about 272.6381938002.

The spelling of 20265629 in words is "twenty million, two hundred sixty-five thousand, six hundred twenty-nine".