125404504066 has 24 divisors (see below), whose sum is σ = 196684669440. Its totient is φ = 59962718376.

The previous prime is 125404504009. The next prime is 125404504079. The reversal of 125404504066 is 660405404521.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6065775 + ... + 6086413.

It is an arithmetic number, because the mean of its divisors is an integer number (8195194560).

Almost surely, 2^125404504066 is an apocalyptic number.

125404504066 is a deficient number, since it is larger than the sum of its proper divisors (71280165374).

125404504066 is a wasteful number, since it uses less digits than its factorization.

125404504066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26430 (or 26407 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 125404504066 its reverse (660405404521), we get a palindrome (785809908587).

The spelling of 125404504066 in words is "one hundred twenty-five billion, four hundred four million, five hundred four thousand, sixty-six".