25726516278 has 16 divisors (see below), whose sum is σ = 53690121216. Its totient is φ = 8202657320.

The previous prime is 25726516273. The next prime is 25726516303. The reversal of 25726516278 is 87261562752.

It is a self number, because there is not a number n which added to its sum of digits gives 25726516278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25726516273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93211878 + ... + 93212153.

It is an arithmetic number, because the mean of its divisors is an integer number (3355632576).

Almost surely, 2^25726516278 is an apocalyptic number.

25726516278 is an abundant number, since it is smaller than the sum of its proper divisors (27963604938).

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

25726516278 is a wasteful number, since it uses less digits than its factorization.

25726516278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186424059.

The product of its digits is 2822400, while the sum is 51.

The spelling of 25726516278 in words is "twenty-five billion, seven hundred twenty-six million, five hundred sixteen thousand, two hundred seventy-eight".