25525780525808 has 10 divisors (see below), whose sum is σ = 49456199768784. Its totient is φ = 12762890262896.

The previous prime is 25525780525801. The next prime is 25525780525829. The reversal of 25525780525808 is 80852508752552.

It is a super-5 number, since 5×25525780525808⁵ (a number of 68 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525780525801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 797680641416 + ... + 797680641447.

Almost surely, 2^{25525780525808} is an apocalyptic number.

It is an amenable number.

25525780525808 is a deficient number, since it is larger than the sum of its proper divisors (23930419242976).

25525780525808 is a wasteful number, since it uses less digits than its factorization.

25525780525808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595361282871 (or 1595361282865 counting only the distinct ones).

The product of its (nonzero) digits is 89600000, while the sum is 62.

The spelling of 25525780525808 in words is "twenty-five trillion, five hundred twenty-five billion, seven hundred eighty million, five hundred twenty-five thousand, eight hundred eight".