125432431666 has 8 divisors (see below), whose sum is σ = 188294390064. Its totient is φ = 62667634980.

The previous prime is 125432431637. The next prime is 125432431679. The reversal of 125432431666 is 666134234521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24287200 + ... + 24292363.

It is an arithmetic number, because the mean of its divisors is an integer number (23536798758).

Almost surely, 2^125432431666 is an apocalyptic number.

125432431666 is a deficient number, since it is larger than the sum of its proper divisors (62861958398).

125432431666 is a wasteful number, since it uses less digits than its factorization.

125432431666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48580856.

The product of its digits is 622080, while the sum is 43.

The spelling of 125432431666 in words is "one hundred twenty-five billion, four hundred thirty-two million, four hundred thirty-one thousand, six hundred sixty-six".