125531310566 has 8 divisors (see below), whose sum is σ = 188300781984. Its totient is φ = 62764383240.

The previous prime is 125531310559. The next prime is 125531310601. The reversal of 125531310566 is 665013135521.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507470 + ... + 713153.

It is an arithmetic number, because the mean of its divisors is an integer number (23537597748).

Almost surely, 2^125531310566 is an apocalyptic number.

125531310566 is a deficient number, since it is larger than the sum of its proper divisors (62769471418).

125531310566 is a wasteful number, since it uses less digits than its factorization.

125531310566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272046.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 125531310566 in words is "one hundred twenty-five billion, five hundred thirty-one million, three hundred ten thousand, five hundred sixty-six".