125162064161 has 4 divisors (see below), whose sum is σ = 125162805552. Its totient is φ = 125161322772.

The previous prime is 125162064061. The next prime is 125162064179. The reversal of 125162064161 is 161460261521.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 125162064161 - 2³⁴ = 107982194977 is a prime.

It is a super-3 number, since 3×125162064161³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125162064061) 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, 19310 + ... + 500696.

It is an arithmetic number, because the mean of its divisors is an integer number (31290701388).

Almost surely, 2^125162064161 is an apocalyptic number.

It is an amenable number.

125162064161 is a deficient number, since it is larger than the sum of its proper divisors (741391).

125162064161 is an equidigital number, since it uses as much as digits as its factorization.

125162064161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741390.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 125162064161 in words is "one hundred twenty-five billion, one hundred sixty-two million, sixty-four thousand, one hundred sixty-one".