525840129161 has 4 divisors (see below), whose sum is σ = 526236392832. Its totient is φ = 525443865492.

The previous prime is 525840129137. The next prime is 525840129173. The reversal of 525840129161 is 161921048525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525840129161 - 2¹⁰ = 525840128137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525840029161) 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, 198129845 + ... + 198132498.

It is an arithmetic number, because the mean of its divisors is an integer number (131559098208).

Almost surely, 2^525840129161 is an apocalyptic number.

It is an amenable number.

525840129161 is a deficient number, since it is larger than the sum of its proper divisors (396263671).

525840129161 is a wasteful number, since it uses less digits than its factorization.

525840129161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396263670.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 525840129161 in words is "five hundred twenty-five billion, eight hundred forty million, one hundred twenty-nine thousand, one hundred sixty-one".