825525043181 has 2 divisors, whose sum is σ = 825525043182. Its totient is φ = 825525043180.

The previous prime is 825525043151. The next prime is 825525043243. The reversal of 825525043181 is 181340525528.

825525043181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559939420681 + 265585622500 = 748291^2 + 515350^2 .

It is a cyclic number.

It is not a de Polignac number, because 825525043181 - 2²² = 825520848877 is a prime.

It is a super-2 number, since 2×825525043181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825525043151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412762521590 + 412762521591.

It is an arithmetic number, because the mean of its divisors is an integer number (412762521591).

Almost surely, 2^825525043181 is an apocalyptic number.

It is an amenable number.

825525043181 is a deficient number, since it is larger than the sum of its proper divisors (1).

825525043181 is an equidigital number, since it uses as much as digits as its factorization.

825525043181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 825525043181 in words is "eight hundred twenty-five billion, five hundred twenty-five million, forty-three thousand, one hundred eighty-one".