20262025261 has 2 divisors, whose sum is σ = 20262025262. Its totient is φ = 20262025260.

The previous prime is 20262025249. The next prime is 20262025349. The reversal of 20262025261 is 16252026202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19861264900 + 400760361 = 140930^2 + 20019^2 .

It is a cyclic number.

It is not a de Polignac number, because 20262025261 - 2¹⁷ = 20261894189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20262025061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10131012630 + 10131012631.

It is an arithmetic number, because the mean of its divisors is an integer number (10131012631).

Almost surely, 2^20262025261 is an apocalyptic number.

It is an amenable number.

20262025261 is a deficient number, since it is larger than the sum of its proper divisors (1).

20262025261 is an equidigital number, since it uses as much as digits as its factorization.

20262025261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 20262025261 in words is "twenty billion, two hundred sixty-two million, twenty-five thousand, two hundred sixty-one".