125515601018 has 16 divisors (see below), whose sum is σ = 188461080000. Its totient is φ = 62695273632.

The previous prime is 125515601009. The next prime is 125515601069. The reversal of 125515601018 is 810106515521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11162243 + ... + 11173481.

It is an arithmetic number, because the mean of its divisors is an integer number (11778817500).

Almost surely, 2^125515601018 is an apocalyptic number.

125515601018 is a deficient number, since it is larger than the sum of its proper divisors (62945478982).

125515601018 is a wasteful number, since it uses less digits than its factorization.

125515601018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16309.

The product of its (nonzero) digits is 12000, while the sum is 35.

The spelling of 125515601018 in words is "one hundred twenty-five billion, five hundred fifteen million, six hundred one thousand, eighteen".