7525505881161 has 16 divisors (see below), whose sum is σ = 11508539461120. Its totient is φ = 4855165084080.

The previous prime is 7525505881151. The next prime is 7525505881241. The reversal of 7525505881161 is 1611885055257.

It is a happy number.

7525505881161 is a `hidden beast` number, since 7 + 5 + 2 + 5 + 50 + 588 + 1 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 7525505881161 - 2¹⁴ = 7525505864777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7525505881098 and 7525505881107.

It is not an unprimeable number, because it can be changed into a prime (7525505881151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4495522390 + ... + 4495524063.

It is an arithmetic number, because the mean of its divisors is an integer number (719283716320).

Almost surely, 2^{7525505881161} is an apocalyptic number.

It is an amenable number.

7525505881161 is a deficient number, since it is larger than the sum of its proper divisors (3983033579959).

7525505881161 is a wasteful number, since it uses less digits than its factorization.

7525505881161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8991046493 (or 8991046487 counting only the distinct ones).

The product of its (nonzero) digits is 3360000, while the sum is 54.

The spelling of 7525505881161 in words is "seven trillion, five hundred twenty-five billion, five hundred five million, eight hundred eighty-one thousand, one hundred sixty-one".