25660760263 has 4 divisors (see below), whose sum is σ = 25662092848. Its totient is φ = 25659427680.

The previous prime is 25660760161. The next prime is 25660760269. The reversal of 25660760263 is 36206706652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25660760263 - 2¹⁷ = 25660629191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660760269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636978 + ... + 676063.

It is an arithmetic number, because the mean of its divisors is an integer number (6415523212).

Almost surely, 2^25660760263 is an apocalyptic number.

25660760263 is a deficient number, since it is larger than the sum of its proper divisors (1332585).

25660760263 is a wasteful number, since it uses less digits than its factorization.

25660760263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332584.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 25660760263 in words is "twenty-five billion, six hundred sixty million, seven hundred sixty thousand, two hundred sixty-three".