25766503756 has 24 divisors (see below), whose sum is σ = 53773574400. Its totient is φ = 10562665872.

The previous prime is 25766503739. The next prime is 25766503759. The reversal of 25766503756 is 65730566752.

It is not an unprimeable number, because it can be changed into a prime (25766503759) 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, 20004406 + ... + 20005693.

It is an arithmetic number, because the mean of its divisors is an integer number (2240565600).

Almost surely, 2^25766503756 is an apocalyptic number.

It is an amenable number.

25766503756 is an abundant number, since it is smaller than the sum of its proper divisors (28007070644).

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

25766503756 is a wasteful number, since it uses less digits than its factorization.

25766503756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40010133 (or 40010131 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 52.

The spelling of 25766503756 in words is "twenty-five billion, seven hundred sixty-six million, five hundred three thousand, seven hundred fifty-six".