25726261250560 has 80 divisors (see below), whose sum is σ = 66427556629896. Its totient is φ = 9498927218688.

The previous prime is 25726261250519. The next prime is 25726261250561. The reversal of 25726261250560 is 6505216262752.

It can be written as a sum of positive squares in 4 ways, for example, as 16004736350464 + 9721524900096 = 4000592^2 + 3117936^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (25726261250561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386479059 + ... + 386545618.

Almost surely, 2^{25726261250560} is an apocalyptic number.

25726261250560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25726261250560 is an abundant number, since it is smaller than the sum of its proper divisors (40701295379336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25726261250560 is an equidigital number, since it uses as much as digits as its factorization.

25726261250560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773024713 (or 773024697 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 25726261250560 in words is "twenty-five trillion, seven hundred twenty-six billion, two hundred sixty-one million, two hundred fifty thousand, five hundred sixty".