25260235261 has 2 divisors, whose sum is σ = 25260235262. Its totient is φ = 25260235260.

The previous prime is 25260235153. The next prime is 25260235271. The reversal of 25260235261 is 16253206252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22840579161 + 2419656100 = 151131^2 + 49190^2 .

It is a cyclic number.

It is not a de Polignac number, because 25260235261 - 2¹⁷ = 25260104189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25260235271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630117630 + 12630117631.

It is an arithmetic number, because the mean of its divisors is an integer number (12630117631).

Almost surely, 2^25260235261 is an apocalyptic number.

It is an amenable number.

25260235261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25260235261 is an equidigital number, since it uses as much as digits as its factorization.

25260235261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 25260235261 in words is "twenty-five billion, two hundred sixty million, two hundred thirty-five thousand, two hundred sixty-one".