20265017 has 2 divisors, whose sum is σ = 20265018. Its totient is φ = 20265016.

The previous prime is 20265013. The next prime is 20265059. The reversal of 20265017 is 71056202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16168441 + 4096576 = 4021^2 + 2024^2 .

It is a cyclic number.

It is not a de Polignac number, because 20265017 - 2² = 20265013 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20264983 and 20265001.

It is not a weakly prime, because it can be changed into another prime (20265013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10132508 + 10132509.

It is an arithmetic number, because the mean of its divisors is an integer number (10132509).

Almost surely, 2^20265017 is an apocalyptic number.

It is an amenable number.

20265017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20265017 is an equidigital number, since it uses as much as digits as its factorization.

20265017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20265017 is about 4501.6682463282. The cubic root of 20265017 is about 272.6354493134.

The spelling of 20265017 in words is "twenty million, two hundred sixty-five thousand, seventeen".