25526216768 has 28 divisors (see below), whose sum is σ = 54550017900. Its totient is φ = 11781330432.

The previous prime is 25526216761. The next prime is 25526216797. The reversal of 25526216768 is 86761262552.

It can be written as a sum of positive squares in 2 ways, for example, as 12613985344 + 12912231424 = 112312^2 + 113632^2 .

It is not an unprimeable number, because it can be changed into a prime (25526216761) 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, 15339443 + ... + 15341106.

It is an arithmetic number, because the mean of its divisors is an integer number (1948214925).

Almost surely, 2^25526216768 is an apocalyptic number.

It is an amenable number.

25526216768 is an abundant number, since it is smaller than the sum of its proper divisors (29023801132).

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

25526216768 is a wasteful number, since it uses less digits than its factorization.

25526216768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30680574 (or 30680564 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The spelling of 25526216768 in words is "twenty-five billion, five hundred twenty-six million, two hundred sixteen thousand, seven hundred sixty-eight".